Impulse and Momentum

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

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.

• -2.5

• -10

• -18

• -45

After collision, the two objects move off with different velocity. What type of collision is this?

• Inelastic

• Elastic

Which has more momentum?

• A parked semi truck

• A moving car

• they have the same amount of momentum

Which has more momentum?

• A hummingbird zipping down the street (v = 1 m/s)

• A bus stopped at a stop sign

• A bus barreling down the road (v = 10 m/s)

• A hummingbird hovering at a feeder

A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had twice the mass and was moving at the same speed?

• twice the momentum; 48 kg*m/s

• 1/2 the momentum; 12 kg*m/s

• 4x the momentum; 96 kg*m/s

• 1/4 the momentum; 6 kg*m/s

A bicycle has a momentum of 24 kg•m/s. What momentum would the bicycle have if it had the same mass and was moving with one-half the speed?

• twice the momentum; 48 kg*m/s

• 1/2 the momentum; 12 kg*m/s

• 4x the momentum; 96 kg*m/s

• 1/4 the momentum; 6 kg*m/s

A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?

• 8 m/s

• 32 m/s

• 0.125 m/s

• 18 m/s

What is the momentum if the mass is of an object is 50 kg and it has a velocity of 25 m/s?

• 2 kg*m/s

• 125 kg*m/s

• 10 kg*m/s

• 1250 kg*m/s

A 3 kg cart has a momentum of 18 kg m/s. What is its velocity?

• 6 m/s

• 54 m/s

• 0.17 m/s

• 15 m/s