Momentum and Collisions Review

Front

A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?

Back

375 kg m/s

Front

A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?

Back

74.4 kg

Front

Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds. Which cart experiences the greatest impulse?

Back

Cart A

Front

What is the difference between a car hitting a wall vs. a car hitting a hay stack?

Back

The collision time of the car hitting the hay stack is greater.

Front

The total momentum before a collision is _________ the total momentum after a collision.

Back

equal to 

Front

Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, what is their combined speed just after the collision?

Back

2 m/s 

Front

An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be:

Back

0 m/s

Front

A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg, collides with a smaller box with a mass of 2 kg that is stationary. The boxes stick together. What is the velocity of the two combined masses after collision?

Back

8 m/s

Front

A 3,000 kg truck moving at +10 m/s hits a 1,000 kg parked car which moves off at +15 m/s. What is the velocity of the truck?

Back

5 m/s

Front

When comparing the momentum of two moving objects, which of the following is correct?

Back

The less massive object will have less momentum if the velocities are the same