momentum

Which of the following has the MOST momentum?

• rolling ping-pong ball

• rolling bowling ball

• rolling soccer ball

• rolling basketball

Which object has more momentum?

• motorcycle at 15 mph

• bike at 15 mph

• car at a stoplight

• runner at 10 mph

which object has more momentum?

• baby crawling

• car at stoplight

• butterfly in flight

• ant carrying crumb

If an object has a momentum of 40 kgm/s and a mass of 60 kg, what is it's velocity?

• 2400 m/s

• 1.5 m/s

• 240 m/s

• .67 m/s

If an object has a velocity of 15 m/s and a momentum of 30 kgm/s, what is its mass?

• 450 kg

• 2 kg

• 4.5 kg

• 0.5 kg

If an object has a mass of 20 kg and a velocity of 4 m/s, what is the momentum of the object?

• 80 kgm/s

• 4 kgm/s

• 5 kgm/s

• .2 kgm/s

An object has a mass of 5 kg, a displacement of 5 m, and a time of 25 s, what is its momentum?

• 1 kgm/s

• 750 kgm/s

• 25 kgm/s

• 625 kgm/s

If a net force is acting on an object, 

• its velocity must be constant
• its velocity must be changing
• its mass must be changing
• its acceleration = 0 

Most modern vehicles have padded dashboards. This reduces collision injuries by...

• reducing the driver's change in momentum
• increasing the driver's change in momentum
• increasing the force of impact
• increasing the time of impact

In an elastic collision, ______ is conserved.

• Momentum only

• Kinetic Energy only

• Both momentum and energy