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3 years ago

The bumper cars crash into each other and stop. Explain why both bumper cars stop after the crash. [4marks]

Physics

1 answer:

oee [108]3 years ago

7 0

Answer:

The collision is inelastic

Explanation:

There are two kinds of collision; elastic collision and inelastic collision. In an elastic collision, both momentum and kinetic energy are conserved.

However, in an inelastic collision, kinetic energy is not conserved. So, when the bumper of two cars collide, the cars come to a stop because the collision is inelastic.

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Answer:

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A 1056-hertz tuning fork is struck at the same time as a note on the piano and you hear 2 beats/second. You tighten the piano st

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Answer:

The frequency of the piano string is <em>1059 Hz</em>.

Explanation:

The frequency beat (fb), 2 beats/second, is the absolute difference between the frequency of the tuning fork (1056 Hz) and the frequency of the piano string.

As the piano string gets tightened, the frequency beat becomes 3 beats/second.

Therefore,

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3 years ago

The California sea lion is capable of making extremely fast, tight turns while swimming underwater. In one study, scientists obs

anygoal [31]

Answer:

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This is 49% of maximum jet acceleration given as a = 9g

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As we know that the radius of the circular loop is given as

R = 0.37 m

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3 years ago

A 3.1-kilogram gun initially at rest is free to

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The conservation of momentum states that the total momentum in a system is constant if there is no external force acting on the system. The total momentum in the gun bullet system is 0 so it must stay that way.

The momentum of the bullet is mv = 0.015*500=7.5
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Substituting this in we get:

7.5=3.1x
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x=2.42

So the speed of the gun is 2.4m/s.

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The answer is D, because the collision's between molecules are elastic, not inelastic.

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