Chap 6 Momentum MC

A 2kg glider slides at 1 m/s toward a 1kg at rest on an air track. They collide and stick. The combined mass moves at...

2/3 m/s

A 3kg ball has a momentum of 12kg m/s. What is the ball's speed?

4 m/s

You are driving down the highway an a bug splatters into your windshield. Which undergoes the greater amount of force?

Both are the same

You are driving down the highway an a bug splatters into your windshield. Which undergoes the greater change in momentum during the time of contact?

Both are the same

a large metal ball is shot from a cannon with a short barrel. If the same ball was to be shot from a cannon with a longer barrel its exit velocity would be...

More

If a monkey floating in outer space throws his hat away, the hat and the monkey will both

Move away from each other but at different speeds

A freight train rolls along a track with considerable momentum. If it rolls at the same speed but has twice as much mass its momentum is...

Unchanged

It is correct to say that impulse is equal to

a change in momentum

Cars with airbags are safer in an accident than cars without airbags because an occupant hitting the air bag has...

increased time of impact

A rifle recoils while firing a bullet. The speed of the rifle's recoil is small because the...

the rifle has much more mass than the bullet