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Answer:

1) The acceleration is in the SW direction.

2) It is not possible to make a conclusion regarding the direction of the velocity.

Explanation:

1)

2)

Answer:

Copper is the best conductor

Answer:

The type of mechanical energy that is possessed due to the virtue of motion or state of a body is known as potential energy.

Its formula: PE= mgh

Its SI unit is joule.

Hope it helps you..

Given :

A ball strikes a wall. It exerts a force of 10 N to the left against the wall and bounces off.

To Find :

What force does the wall exert on the ball.

Solution :

We know, by third law of motion "every motion has equal and opposite reaction".

Ball exert a force of 10 N to the left against the wall.

So, by newton's third law of motion :

Wall will exert same force of 10 N in opposite direction i.e in right direction.

Therefore, force does the wall exert on the ball is 10 N to the right.

Hence, this is the required solution.

Answer:

10 N to the right

Explanation:

edge 2021

Answer:

The element H (Hydrogen) has an atomic number of 1.

Answer:

1 = H = Hydrogen

Answer:

5s

Explanation:

i just know

A person rides a bike with a constant velocity of 2 m/s. If his total  displacement is 10 meters,  he was riding for 5 sec.

When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time. Uniform motion an object is said to have uniform motion when object cover equal distance in equal interval of time within exact fixed direction. For a body in uniform motion, the magnitude of its velocity remains constant over time.

Given in question a person rides a bike with a constant velocity of 2 m/s. If his total  displacement is 10 meters,

Velocity = Displacement / time

2  = 10/time

time = 5 sec

A person rides a bike with a constant velocity of 2 m/s. If his total  displacement is 10 meters,  he was riding for 5 sec.

To learn more about velocity refer the link:

brainly.com/question/18084516  

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Answer:

The speed of the raindrop is 11.55 m/s.

Explanation:

We need to find the speed of the rain in the "y" direction. We have:

[tex]v_{r}[/tex]: speed of the raindrop at 60° (vertical) =?

[tex]v_{c}[/tex]: speed of the car = 20 m/s (in the "x" direction)

Hence, the speed of the car and the speed of the raindrop are related by:

[tex]tan(\theta) = \frac{v_{c}}{v_{r}}[/tex]        

[tex] v_{r} = \frac{v_{c}}{tan(60)} = \frac{20}{tan(60)} = 11.55 m/s [/tex]

Therefore, the speed of the raindrop is 11.55 m/s.

I hope it helps you!      

According to the question,

Let,

As we know the formula,

→ [tex]tan (\Theta) = \frac{v_c}{v_r}[/tex]

or,

→ [tex]v_r = \frac{v_c}{tan (60)}[/tex]

By putting the values, we get

       [tex]= \frac{20}{tan (60)}[/tex]

       [tex]= 11.55 \ m/s[/tex]

Thus the above answer is right.

Learn more about speed here:

https://brainly.com/question/18076916

Answer:

I got you.. i'm in middle school and had that same question.

Explanation:

Refer to the diagram shown below.

The vertical distance traveled is

s = 25 m

The initial vertical launch velocity is zero.

Therefore

s = (1/2)*g*t²

where g = 9.8 m/s²

t = the time of flight, s

That is,

0.5*9.8*t² = 25

t² = 25/4.9 = 5.102

t = 2.26 s

Answer: 2.26 s

Answer:

ahh yes you are so smart and I hope you get a good job when you are older

Answer:

false

Explanation:

Answer:

false

Explanation:

The Cenozoic Era is the current Era it's also called the new life era. Dinosaurs appeared in the Triassic era.

Answer:

When muscles are required to work harder than they're used to or in a different way, it's believed to cause microscopic damage to the muscle fibres, resulting in muscle soreness or stiffness. DOMS is often mistakenly believed to be caused by a build up of lactic acid, but lactic acid isn't involved in this process.

Explanation:

Answer:

a moderate base

Explanation:

Milk of magnesia is popularly known as magnesium hydroxide. Magnesium hydroxide Mg(OH)₂ is used as an anti-acid in toothpaste and medically as a mild laxative.

Its pH values range between 10- 11 on the pH scale.

A solution with pH value of 7 is neutral(i.e. neither acidic nor basic.

A pH value which is less than 7 is acidic while a pH value greater than 7 is basic.

For a pH value between 12 -14 on the pH scale is said to be a strong base.

Since Milk of magnesia Mg(OH)₂ pH values ranges between 10- 11 on the pH scale, it is known to be moderately basic.

Answer:

you need to divide 7500/286.2

Answer:

The evidence is : Light reflects when it hits a surface.

Explanation:

The meaning of dual wave particle nature is that light exhibits both wave and particle properties. This is to say that light is a particle in form of a photon and a wave due to flow of photons. The properties displayed by light such a reflection of light and scattering of light are possible due to the properties of small particles/photons.  

Answer:

Light reflects when it hits a surface

Explanation:

Answer:

4D

Explanation:

We will use 2nd equation of motion in this question:

s = Vi t + (0.5)gt²

where,

s = distance covered

t = time taken

g = acceleration due to gravity

For t = 1 s:

s = D

Therefore,

D = (0 m/s)(1 s) + (0.5)g(1 s)²

D = 0.5g   -------------- equation (1)

For t = 2 s:

s = D

Therefore,

s = (0 m/s)(1 s) + (0.5)g(2 s)²

s = 0.5g(4)

using equation (1):

s = 4D

therefore, correct answer is:

4D

Answer:

acceleration

sorry i answered late

Answer:

60 kg m/s

Explanation:

Let [tex]a\;\; m/s^2[/tex] be the acceleration of the object.

As the acceleration of the object is constant, so

[tex]a=\frac {v-u}{t}\cdots(i)[/tex]

Given that applied force, F=6.00 N,

From Newton's second law, we have

[tex]F= m\times a[/tex],

[tex]\Rightarrow F=\frac {m(v-u)}{t}[/tex] [from equation (i)]

[tex]\Rightarrow Ft=m(v-u)[/tex]

[tex]\Rightarrow Ft=mv-mu[/tex]

[tex]\Rightarrow mv-mu=6\times 10[/tex] [given that time, t=10 s and F=6 N]

[tex]\Rightarrow mv-mu=60 kg \;m/s[/tex]

Here mv is the final momentum of the object and mu is the initial momentum of the object.

So, the change in the momentum of the object is mv-mu.

Hence, the change in the momentum of the object is 60 kg m/s.

The change in momentum of object is 60 kg-m/s.

Given data:

The magnitude of force is, F = 6.00 N.

The mass of object is, m = 3.00 kg.

The speed of object is, v = 15.0 m/s.

The time interval is, t = 10.0 s.

The change in momentum is mathematically equal to the difference between the final momentum and initial momentum of object. And it is obtained from the impulse-momentum concept as,

[tex]F=\dfrac{\Delta p}{t}\\\\\Delta p = F \times t[/tex]

Solving as,

[tex]\Delta p = 6.00 \times 10\\\\\Delta p =60.0 \;\rm kg.m/s[/tex]

Thus, we can say that the change in momentum of object is 60 kg-m/s.

Learn more about the change in momentum here:

https://brainly.com/question/904448

Answer:

1.7 m

Explanation:

[tex]v_x[/tex] = Velocity of ball in x direction = 4.47 m/s

[tex]u_y[/tex] = Velocity of ball in y direction = 0

g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]

t = Time taken

[tex]s_y[/tex] = Vertical displacement = 0.7 m

[tex]s_y=u_yt+\dfrac{1}{2}gt^2\\\Rightarrow 0.7=0+\dfrac{1}{2}\times 9.81t^2\\\Rightarrow t=\sqrt{\dfrac{0.7\times 2}{9.81}}\\\Rightarrow t=0.38\ \text{s}[/tex]

Horizontal displacement is given by

[tex]s_x=v_xt\\\Rightarrow s_x=4.47\times 0.38\\\Rightarrow s_x=1.7\ \text{m}[/tex]

The passenger should throw the ball 1.7 m in front of the bucket.

Answer: True

Explanation:

(i hope this helps sorry kinda late but i did not see any answers)but can i have brainlist

Answer:

Newton is derived unit

Explanation:

Because it depends upon three fundamental units i.e kg,m and s

Hope it helps you.

Answer:

the correct answer is A

Explanation:

In a series circuit the current flows through the circuit and when it is opened at some point the current stops throughout the circuit.

In a parallel circuit, the current flows through the different branches of the circuit and when the current in one branch is interrupted, it continues to flow through the others.

In this exercises they indicate that the bedroom lights are turned off (the circuit was opened), but the kitchen lights are still on, therefore it is a parallel circuit with at least two branches, the current that circulates through each one depends on the existence on each branch.

Therefore the correct answer is A

Answer:

The resistance of the circuit is 0.[tex]\bar 3[/tex] Ω

Explanation:

The given parameters are;

The voltage the charger produces = 14.5 Volts

The current flow of the charger = 43.5 Amps

Therefore, the resistance of the circuit, R = Voltage V/(Current, I)

R = V/I = 14.5/43.5 = 1/3 = 0.[tex]\bar 3[/tex] Ohms

The resistance of the circuit = 0.[tex]\bar 3[/tex] Ohms

Which can be written with the symbol for the unit of resistance Ω as follows;

The resistance of the circuit = 0.[tex]\bar 3[/tex] Ω.

Answer:

7056 kJ

Explanation:

Given that,

Mass of a ship roller coaster is 36,000 kg.

It reaches a height of 20 m off the ground

We need to find the gravitational potential energy does it have. The formula for the gravitational potential energy ios given by :

E = mgh

g is acceleration due to gravity

E = 36,000 kg × 9.8 m/s² × 20 m

= 7056000 J

or

E = 7056 kJ

So, it will have 7056 kJ of gravitational potential energy.

Answer:

Explanation:

ok it's correct

Answer:

68.8 N

Explanation:

From the question given above, the following data were obtained:

Mass (m) of box = 18 Kg

Coefficient of friction (μ) = 0.39

Force of friction (F) =?

Next, we shall determine the normal force of the box. This is illustrated below:

Mass (m) of object = 18 Kg

Acceleration due to gravity (g) = 9.8 m/s²

Normal force (N) =?

N = mg

N = 18 × 9.8

N = 176.4 N

Finally, we shall determine the force of friction experienced by the object. This is illustrated below:

Coefficient of friction (μ) = 0.39

Normal force (N) = 176.4 N

Force of friction (F) =?

F = μN

F = 0.39 × 176.4

F = 68.796 ≈ 68.8 N

Thus, the box experience a frictional force of 68.8 N.

Answer:

Body weighs lesser in water because of the upward force (buoyant force) which acts on our body thereby reducing our actual weight. This is our apparent weight.

Explanation:

hope it helps

Answer:

joules = newtons x meters

Explanation:

Work is equal to the force that is exerted, multiplied by the distance over which it is exerted.

In equation form:

joules (work) = newtons (force) x meters (distance) ,

A joule is the unit of work.

Hope this helped!! :)