MOMENTUM

The momentum of an object depends upon the object's ___________&_____________.  

• size and shape
• mass and speed
• mass and veloctiy
• mass and energy

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

• car
• bike
• they are equal
• cannot determine using the info provided

In any collision (crash) the ______ is ALWAYS constant

• Total Momentum
• total speed
• total Velocity
• Energy

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

• 0.1 kg-m/s
• 1 kg-m/s
• 10 kg-m/s
• 100 kg-m/s

The impulse is ______ the change in momentum

• Greater than
• Equal to
• less than
• always double

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.

• 1 N*s
• 6 N*s
• 33.3 N*s 
• None of these

When the speed of an object is doubled, its momentum

• remains unchanged in accord with the conservation of momentum.
• doubles
• quadruples
• decreases

If the change of momentum of an object is 50kg m/s, we can say the impulse is equal to:

• 0 N*s

• 25 N*s

• 50 N*s

• 100 N*s

An object having a p_i of 30kg m/s has ended with a p_f of 40 kg m/s. What impulse caused this?

• 2 N*s

• 10 N*s

• 70 N*s

• 5 N*s