Momentum!!!

Rewrite Newton's Second Law in terms of momentum!

Chelsea is running in a rainstorm and carrying a bucket. As her bucket fills with water, she begins to slow her running speed down. Would the momentum of the Chelsea + bucket system be increasing or decreasing?

• Increasing

• Decreasing

• Need more information to say for sure

• Remaining constant

Is it possible for kinetic energy to have a smaller magnitude than momentum? (Fewer J than N*s)

• Yes!!!!!

• No.....

Select the option containing ONLY vector quantities.

• Momentum, velocity, distance, impulse

• Momentum, velocity, energy, speed

• Momentum, impulse, force, work

• Momentum, impulse, acceleration, displacement

Jim is running to his parents' house carrying a large bag of sand. As sand leaks out the bag, he simultaneously slows his running speed due to tiredness. Would the momentum of the system be increasing or decreasing?

• Increasing

• Decreasing

• Need more information to say for sure

• Remaining constant

Which of the following options is NOT always equal to impulse?

If an object's mass is increasing as its velocity remains constant, which direction must the net force be in?

• The same direction as the velocity

• The opposite direction from the velocity

• There is no net force in this case

• Multiple possible directions

Do you have your calculator out?

• Yes

• I do now

• No (brave option)

A 75 kg person riding east on a 10 kg bike accelerates from 20 m/s to 30 m/s. Calculate his impulse over this timeframe.

Calculate the momentum of a car which goes up a 25.0 degree frictionless incline at a constant velocity. Its power output is 60.0 kW.

• Need to have the car's mass