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Maksim231197 [3]
3 years ago
11

A small lab cart and one of larger mass collide and rebound off each other. Which of them has the greater average force on it du

ring the collision
They both experience a force of zero.


They both experience the same magnitude of the collision force.


The large cart has greater force on it.


The small cart has greater force on it.
Physics
1 answer:
Elza [17]3 years ago
4 0

When a small cart collide with a large mass then during collision they must be in contact with each other for some interval of time

During this contact interval we can say they will exert normal force on each other

This normal force is always equal and opposite on two balls which means this force will follow Newton's III law

It will be same in magnitude but opposite in the direction

So here correct answer would be

<u><em>They both experience the same magnitude of the collision force.</em></u>

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Answer:

1270.64\ \text{J}

Explanation:

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mg = Weight of object = 20 N

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

v = Final velocity = 15 m/s

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The force balance of the system is

\dfrac{1}{2}m(v^2-u^2)=(mg\sin\theta-f)d\\\Rightarrow \dfrac{1}{2}mv^2=mg\sin\theta d-fd\\\Rightarrow fd=mg\sin\theta d-\dfrac{1}{2}mv^2\\\Rightarrow fd=20\times \sin 30^{\circ}\times 150-\dfrac{1}{2}\times \dfrac{20}{9.81}\times 15^2\\\Rightarrow fd=1270.64\ \text{J}

The work done against friction is 1270.64\ \text{J}.

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A friend snorkeling just below the surface of the water along the same shore will detect the sound first.

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