PROBE: Momentum and Collisions

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

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

Which object listed below has the greatest momentum?

• A 0.05 kg object rolling at 0.2 m/s.

• A 0.15 kg object rolling at 2 m/s.

• A 0.15 kg object rolling at 1 m/s

• A 0.4 kg object rolling at 2 m/s.

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

• 66 N.s

• None of these

A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?

• 0 kgm/s

• 30 kgm/s

• 50 kgm/s

• 10 kgm/s

A 2kg box is moving at 2m/s when it get pushed with 10N of force over a period of 3 seconds. What will be its velocity after the push?

• 13m/s
• 17m/s
• 58m/s
• 62m/s

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

Tags

NGSS.HS-PS2-2

A collision where momentum is conserved, kinetic energy is not conserved, and the objects bounce off of each other (do not stick together) is referred to as

• Elastic
• Inelastic
• Completely inelastic