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5.Object 1 has twice the mass of Object 2. Both objects have the same kinetic energy. Which of the following statements is true?

A、Both objects can have the same magnitude of momentum.

B、Object 1 has a momentum of greater magnitude than Object 2.

C、The magnitude of the momentum of Object 2 is four times that of Object 1.

D、All the statements are false.

E、All the statements are true.

提问人:网友ljhdx9082007 发布时间:2022-01-07
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第3题
A 20-g bullet moving at 1 000 m/s is fired through a one-kg block of wood emerging at a speed of 100 m/s. If the block had been originally at rest and is free to move, what is its resulting speed?

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第4题
Two masses collide and stick together. Before the collision one of the masses was at rest. Is there a situation in which the kinetic energy is conserved in such a collision?

A、Yes, if the less massive particle is the one initially at rest.

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第5题
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What is the angular speed about the rotational axis of the Earth for a person standing on the surface?______×10^-5 rad/s

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第7题
For a point on a spinning disc in uniform circular motion, which of the following is not constant?

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第8题
A car is going around a racetrack at constant speed. The curves around the track have different radii. In which turn is the magnitude of the car's acceleration the greatest?

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Two points on a merry-go-round are located at distances from the center r1 and r2, where r1 < r2. While the merry-go-round is in the process of speeding up to operational speed, which of the following equations involving magnitudes of angular speed, angular acceleration, and tangential speed for these points is incorrect?

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