Complete question is;
A ski jumper travels down a slope and leaves the ski track moving in the horizontal direction with a speed of 24 m/s. The landing incline below her falls off with a slope of θ = 59◦ . The acceleration of gravity is 9.8 m/s².
What is the magnitude of the relative angle φ with which the ski jumper hits the slope? Answer in units of ◦
Answer:
14.08°
Explanation:
The time covered will be given by the formula;
t = (2V_x•tan θ)/g
t = (2 × 24 × tan 59)/9.8
t = 8.152 s
Now, the slope of the flight path at the point of impact will be given by the formula;
tan α = V_y/V_x
We are given V_x = 24 m/s
V_y will be gotten from the formula;
v = gt
Thus;
V_y = gt
V_y = 9.8 × (8.152) = 78.89 m/s
Thus;
tan α = 78.89/24
tan α = 3.2871
α = tan^(-1) 3.2871
α = 73.08°
Thus ;
Relative angle φ = α - θ = 73.08 - 59 = 14.08°
A car travels from 20-meters to 60-meters in 10 seconds. Calculate the car's speed.
Answer:
8 m/s
Explanation:
All you have to do here is add 20 and 60 (giving you 80) and dividing by 10 seconds. 80/10= 8 m/s
Anyone get this can you please help me, can you also please do it step by step
Answer:
7.69 hours
Explanation:
3 hr/ 1000mi x 130mi = 7.69 hours or 7.7 hours
What is the momentum of an object with a mass of 60 kg and velocity of 10 m/s?
Explanation:
Linear momentum= Mass*Velocity
P=mv
P=60*10
P=600Kg m/s
5. Select all of the following which are vector values. *
(3 Points)
Distance
Displacement
Speed
Velocity
Option 5
Acceleration
Answer:bum
Explanation:
A sled with no initial velocity accelerates at a rate of 3.2 m/s^2 down a hill. How long does it take the sled
to go 12 m to the bottom?
Does anybody know anything about speed and velocity? im hella stuck.
Answer:
lm.ao i was stuck too when i was on that
Explanation:
what u need to know sis?
speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Speed is ignorant of direction. On the other hand, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.
unlike other states of matter, what expand to fill their containers
Answer:
gas
Explanation:
Answer:
Person above me is big brain!
Explanation:
They are correct!
Give them some love and mark them as brainliest!
A man runs at 7.5 m s-1 due east across the deck of a ship which moves at 10.0 m s-1 due north. Determine the resultant velocity of the man( his velocity relative to the water)
Answer:
12.5 m/s North/east
Explanation:
I thought of it as a graph. I basically just found the distance between the points (0,0) and (10, 7.5)!
The resultant velocity of the man is 12.5 m/s.
What is velocity?The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.
Velocity of the man: v₁ = 7.5 m/s (due east )
Velocity of the ship: v₂ = 10 m/s. ( due north.)
Hence, the man and the ship move in perpendicular direction.
So, his velocity relative to the water = the resultant velocity of the man
= √(7.5² + 10²) m/s = 12.5 m/s.
Hence, resultant velocity of the man is 12.5 m/s.
Learn more about velocity here:
https://brainly.com/question/18084516
#SPJ2
How many types of joints are there in the human body? A. 4 B. 2 C. 12 D. 6
Answer:
there are six types of joints in the human body
Answer: The answer is D. 6
Explanation: Learned in health class a while ago.
Why does the rider continue to go the same height on the ramp every time and would continue to do that forever?
The force of something stronger than the muscles causes it to increase its tension as it
gets longer.
False
True
The force of something stronger than the muscles causes it to increase its tension as it gets longer is true.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Frictional force allows the ball to stay in the hand while muscular force is employed to stop the motion of the ball during catching. Throughout this activity, the Earth's gravitational pull on the ball is constant.
The force of something stronger than the muscles causes it to increase its tension as it gets longer is true.
To learn more about force refer to the link:
brainly.com/question/13191643
#SPJ2
As a ball rolls downhill it increases in speed from 6 km/hr to 3 m/s in 5 seconds. What is
the acceleration of the ball in m/s squared?
(This question is also math)
Answer:
0.267 m/s^2
Explanation:
6 km/hr * 1hr/ 3600 sec * 1000m/ 1 km
1.67 m/s to 3 m/s
vf=vi+at
3 m/s= 1.67 m/s+ a(5 s)
a=0.267 m/s^2
I shoot a water balloon catapult at the end of the year rally with a velocity of
57m/s at 31 degrees. What velocity does it hit the ground with?
Answer:
29.36 [tex]m/s[/tex] downwards
Explanation:
Use the equation [tex]v^{2} =u^{2} +2as[/tex]
Choose upwards as positive
v=?
u= 57sin31 (vertical component of initial velocity)
a= -9.8
s=0
[tex]v^{2} = (57sin31)^2 +2(-9.8)(0)[/tex]
v=29.36 [tex]m/s[/tex] downwards
A Galapagos tortoise weighs 59 Newtons (on Earth). What is its mass in kilograms?
Answer:
It is 6.02 kilograms.
Explanation:
One kilogram is equal to 9.81 Newtons. To convert Newtons to Kilograms,divide by 9.81. For instance, 20 Newtons would be equivalent to 20/9.81 or 2.04 kilograms
Problem
Position The figure shows a motorcyclist traveling east along a straight
road. After passing point B, the cyclist continues to travel at an average
velocity of 18 m/s east and arrives at point C2.8 s later. What is the
position of point ?
Answer:
s = 50.4 m
Hence, the point C is 50.4 m towards east from point B
Explanation:
Since, the motorcyclist travels at a constant speed in straight line towards east after point B. Therefore, we can use the following equation in this case:
s = vt
where,
s = distance covered = position of point C = ?
v = uniform speed of motorcyclist = 18 m/s
t = time interval = 2.8 s
Therefore,
s = (18 m/s)(2.8 s)
s = 50.4 m
Hence, the point C is 50.4 m towards east from point B
the diagram deliver of uniform mass supported at the middle point six Queens of equal mass are placed at mark 4 on on the lift hand side can you balance the liver with 12 Mor coins of equal mass if yes where where would you place them if if not why
Answer:
hmm I don’t understand
Explanation:
Which is the best reason a writer would use a unreliable narrator
Answer: Explanation:
Authors sometimes use an Unreliable Narrator to tell the story, a protagonist who can't be trusted to tell the events accurately. Either they are insane, evil, delusional, forgetful, or just plain wrong... whatever their reasons, the writer uses this technique to 'hook' the reader.
Answer: to give other characters something to react to
What happens to the acceleration of a car that travels down a ramp and eventually stops?
Answer:The speed stops because the car loses energy and fuel.
Explanation:
What is linear motion?
Answer:
Linear motion is a one-dimensional motion along a straight line, and can therefore be described mathematically using only one spatial dimension.
Explanation:
What stage of mitosis does mutations occur?!
Answer:
if it is a gene mutation then it is during the S phase, and if it is a chromosome mutation, then during metaphase or anaphase.
Explanation: I think it happens in the interphase
When a mutation occurs in mitosis, stage of Mitosis is interphase.
What is mutation?Mutation that occurs in mitosis typically causes tumor.
Genetic mutations occur during the S phase of the cell cycle i.e during interphase before mitosis begins. When DNA is replicated, error would cause a mutation in the genetic code. Chromosomal nondisjunction denotes the failure of replicated chromosomes to separate causing extra or missing chromosomes in the daughter cells to occur. This mutation can occur during mitosis.
Thus, When a mutation occurs in mitosis, stage of Mitosis is interphase.
Learn more about mutation.
https://brainly.com/question/13923224
#SPJ2
What is the force of a lead ball that starts with a momentum of 7 kg*m/s and end with a momentum of 22 kg*m/s over a time of 31 seconds?
Explain how you got your answer.
Answer:
F = 0.483 N
Explanation:
Initial momentum, [tex]P_i= 7\ kg-m/s[/tex]
Final momentum, [tex]P_f= 22\ kg-m/s[/tex]
Time, t = 31 s
We need to find the force of a lead ball. We can use here the impulse momentum theorem.
[tex]\text{Change in momentum}=F\times t[/tex]
F is force
[tex]P_f-P_i=Ft\\\\F=\dfrac{P_f-P_i}{t}\\\\F=\dfrac{22-7}{31}\\\\F=0.483\ N[/tex]
So, the force is 0.483 N.
what are contact force and non contact force give example
Explanation:
Force is push or pull on a body.
Contact force is a force that requires contact. It acts between two body that touches on another.
Examples are pushing a car, ringing a bell, kicking a ball.
Non contact forces are forces applied to another object without contact. The action of this force is usually through a targeted force field.
Examples are magnetic force, gravitational force
priyadarshini means..........
Answer:
A submission from India says the name Priyadharshini means "Beloved and pleasing to look at" and is of Sanskrit origin. According to a user from India, the name Priyadharshini is of Indian (Sanskrit) origin and means "God gift".
Drag each tile to the correct box.
Arrange the steps in order to describe what happens to a liquid when it is heated.
The particles of liquid move faster.
The liquid changes to a gas.
The liquid gains thermal energy.
The space between the liquid particles
increases.
the space between the liquid. particles. increase. the particles of liquid. move faster the liquid gains thermal energy the liquid change. to gas.
Answer:
the space between the liquid. particles. increase. the particles of liquid. move faster the liquid gains thermal energy the liquid change. to gas.
Explanation:
A
person shoves an ice cube off a table. Which of the following acts on the ice cube after it leave
the table but before it hits the floor?
Answer:
friction I would guess? you didnt leave any options.
Explanation:
What would happen if the electromagnet in an electric bell is replaced by an ordinary magnet
Answer:
The bell will not work as the Hammer will be attracted to the Gong and it will remain attracted because if there was an electromagnet the hammer will be released as soon as we stop pressing the switch but a Bar magnet is a permanent magnet and once it will get attracted to the Gong it will remain attracted.
Explanation:
Hope that helps!
When you must add three vectors together, what is not true this process? You must only give a magnitude of the resultant vector It does not matter what order you add the vectors You can move the vectors parallel to each other You must connect the head of each vector with the tail of the next vector
The addition of any numbers of vector provide the magnitude as well as the direction of the resultant vector, hence the mentioned first option is not true.
The addition of vector required to connect the head of the one vector with the tail of the other vector and any vector can be moved in the plane parallet to the previous location, so, the mentioned second and third options are true.
How can you find the frequency or period of ocean waves?
Answer: As you probably have seen in the ocean or a lake, the stronger the wind, the higher the waves. The period and wavelength can be expressed in terms of their reciprocals, the wave frequency ω = 2(pi)/T, and the wave number κ = 2(pi)/λ.
Explanation: To find the period, we solve for T=1f, given the value of the frequency (f=2s−1). T=12 s−1=0. 5 s. Since one definition of wavelength is the distance a wave has traveled after one complete cycle (or one period), the values for the wavelength (λ=0.9m) as well as the frequency are given.
YO CAN YALL HELP ME IN DIS!
Answer:
i guess it will be mass or volume, but not sure
Explanation:
because the blocks volume will be same as the displaced water, then u will check the mass or volume of the water to see what the volume of a object will be.
A 24 kg crate initially at rest on a horizontal floor requires a 75 N horizontal force to set it in motion. Once the crate is in motion, a horizontal force of 53 N keeps the crate moving with a constant velocity. Find μk, the coefficient of kinetic friction, between the crate and the floor.
Answer:
The coefficient of kinetic friction is approximately 0.225
Explanation:
The given parameters are;
The mass of the crate = 24 kg
The force required to set the mass in motion = 75 N
The force required to keep the crate in constant velocity = 53 N
We have;
Sum of horizontal forces, ∑Fₓ = 0
∑Fₓ = The force pulling thing the crate - The force of friction - The force of acceleration of the crate
The force of acceleration of the crate = 0 (Crate with constant velocity)
The force of friction = [tex]\mu_k[/tex] × N
N = The normal (acting perpendicular to the surface) force = (Here) Mass of crate × Gravity
[tex]\mu_k[/tex] = The coefficient of kinetic friction
N = 24 × 9.81 = 235.44 N
The force of friction = [tex]\mu_k[/tex] × 235.44
∴ ∑Fₓ = The force pulling thing the crate - The force of friction
∑Fₓ = 53 - [tex]\mu_k[/tex] × 235.44 = 0
53 - [tex]\mu_k[/tex] × 235.44 = 0
53 = [tex]\mu_k[/tex] × 235.44
[tex]\mu_k[/tex] = 53/235.44 ≈ 0.225
[tex]\mu_k[/tex] = The coefficient of kinetic friction ≈ 0.225.
The coefficient of kinetic friction between the crate and the floor is 0.22.
The coefficient of kinetic friction μk shows the ratio between frictional force and normal force over a body on a rough surface.
Given that:
mass of the crate = 24 kgthe horizontal force [tex]\mathbf{F_{s,max}}[/tex] = 75 NWe need to first find the coefficient of static friction (μs) to determine (μk);
Using the formula:
[tex]\mathbf{\mu_s = \dfrac{F_{s, max}}{m\times g}}[/tex]
[tex]\mathbf{\mu_s = \dfrac{75 \ N }{24 \ kg \times 9.81 \ m/s^2}}[/tex]
[tex]\mathbf{\mu_s = \dfrac{75 }{235.44}}[/tex]
[tex]\mathbf{\mu_s =0.32 }[/tex]
Now, once the crate is in motion; the horizontal force = 53 NHowever, the net force = 0; since F = Fk∴
The coefficient of kinetic friction can be computed as;
[tex]\mathbf{F = \mu_k \times N}[/tex]
[tex]\mathbf{ \mu_k = \dfrac{F}{N}}[/tex]
[tex]\mathbf{ \mu_k = \dfrac{f}{m \times g}}[/tex]
[tex]\mathbf{ \mu_k = \dfrac{53}{24 \times 9.8}}[/tex]
[tex]\mathbf{ \mu_k =0.22 }[/tex]
Therefore, we can conclude that the coefficient of the kinetic friction is 0.22
Learn more about the coefficient of kinetic friction here:
https://brainly.com/question/13754413?referrer=searchResults
