All categories

3 years ago

A student pulls a 60.-newton sled with a force

Physics

2 answers:

ikadub [295]3 years ago

6 0

The magnitude of force exerted by the sled on the student is $\boxed{20\text{ N}}$ .

Explanation:

Given:

The weight of the sled is $60\text{ N}$ .

The force applied by the student on the sled is $20\text{ N}$ .

Concept:

According to the Newton's third law of motion, each and every action on a body applies a equal and opposite reaction on the other body. It means if a person pulls a body by a force then the body also pulls the person with the same force towards itself.

The direction of the reaction applied by the body on the person will be opposite to the action of the person on the body.

In the same manner, as the student applies a force on the sled to pull it in the forward direction, the sled will also apply the same magnitude of force on the student to pull him back in the opposite direction.

<u>The weight of the sled acts in the vertically downward direction and therefore, it will not play any role in the reaction force of the sled on the student.</u>

Thus, the magnitude of force exerted by the sled on the student is $\boxed{20\text{ N}}$ .

Learn More:

1. Which one remains constant in uniform circular motion brainly.com/question/2562955

2. The unit of the gravitational constant brainly.com/question/1724648

3. The x-component of the given vector brainly.com/question/2562517

Answer Details:

Grade: High School

Subject: Physics

Chapter: Laws of motion

Keywords:

student, pulls, a sled, magnitude of force, action, reaction, newton's third law, exerts, applies a force, opposite direction.

OLEGan [10]3 years ago

5 0

20 N

Newtons third law states that any action (pulling the sled) has an equal and opposite reaction (the sled pulling back on you).
Think about pulling a sled on really slippery ice, you would pull yourself toward the sled just as much as the sled toward you.

You might be interested in

A sound wave from a siren has an intensity of 111.2 W/m2 at a certain point, and a second sound wave from a nearby ambulance has

Kazeer [188]

Answer:

The intensity level of the sound wave due to the ambulance is 153.5 dB.

Explanation:

The intensity level of the sound wave due to the ambulance can be calculated using the following equation:

$\beta = 10log(\frac{I}{I_{0}})$

<u>Where</u>:

I: is the intensity of the sound wave from a siren = 111.2 W/m²

I₀: is the reference intensity = 1.0x10⁻¹² W/m²

$\beta = 10log(\frac{111.2 W/m^{2}}{1.0 \cdot 10^{-12} W/m^{2}}) = 140.5 dB$

Now, since the second sound wave from a nearby ambulance has an intensity level 13 dB we have:

$I_{a} = 13 dB + 140.5 dB = 153.5 dB$

Therefore, the intensity level of the sound wave due to the ambulance is 153.5 dB.

I hope it helps you!

5 0

3 years ago

A theory in science is ________.

Veseljchak [2.6K]

Answer:

It would be (a)

Explanation:

A theory is something that can be proved through rigorous and repeated experimentation, while choice (b) sounds tempting i believe it fails at the fact that it says that a theory is an "agreement", sure an agreement could be reached by while trained scientists but that does not necessarily mean that what the scientists agree upon is rigorously tested and repeatable, and so therefore cannot be assumed

That is what I think

Hope this helps :)

3 0

3 years ago

Law of motion that says for every action there is an equal and opposite

hodyreva [135]

Answer: Newton's third law

Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

Explanation:

4 0

3 years ago

Read 2 more answers

A worker pushes horizontally on a large crate with a force of 265.0 N and the crate moved 4.3 m. How much work was done?

trapecia [35]

Answer:

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

work done = 265 × 4.3 = 1139.5

We have the final answer as

Hope this helps you

8 0

3 years ago

A ball is dropped from a height of 20 meters. At what height does the ball have a velocity of 10 meters/second?

borishaifa [10]

Answer:B

Explanation:

Initial velocity, u=0m/s

Distance,s=20m

a=+g=9.8m/s*s

Using v*v=u*u+2gs

v*v=0+2*9.8*20

v*v=392

v=19.8

When s=20m, v = 19.8m/s

Therefore when v = 10m/s, s= 10*20/19.8

s =10.1m

6 0

3 years ago