Momentum

Question 1

What is the momentum of a 3 kg bowling ball moving at 3 m/s?

Revolt · Accepted Answer

9 kg • m/s

Question 2

dolphin✔ sea turtleshark

Revolt · Accepted Answer

✔ sea turtle

Question 3

Consider a system to be one train car moving toward another train car at rest. When the train cars collide, the two cars stick together.What is the total momentum of the system after the collision?

Revolt · Accepted Answer

1,600 kg • m/s

Question 4

If a motorcycle, a car, and a big rig are all moving with a velocity of 100 km/h, which vehicle has the greatest momentum?

Revolt · Accepted Answer

[Image: A large 18 wheeler truck....]

Question 5

Two balls, each with a mass of 0.5 kg, collide on a pool table. Is the law of conservation of momentum satisfied in this collision? Explain why or why not.

Revolt · Accepted Answer

Yes, the law of conservation of momentum is satisfied in this collision. The total momentum of the system before the collision is equal to the total momentum of the system after the collision, assuming no external forces act on the balls.

Question 6

Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, are stuck together and move off after the collision. How does the final velocity of train cars A and B after the collision compare to the initial velocity of train car B before the collision?

Revolt · Accepted Answer

The final velocity is half of train car B’s initial velocity.

Momentum Answers

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