Impulse Pt. 1

What are the units of momentum?

• mi/hr

• kg*m/s

• m/s/s

• kg/m/s

Change in momentum equals to ...

• pi - pf

• pf + pf

• pi + pf

• pf - pi

Impulse can be defined as:

• mass*acceleration

• force*distance

• force*time

• acceleration*time

What is the product of an objects's mass and velocity?

• acceleration

• impulse

• force

• momentum

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

• 2 kg m/s

• 10 kg m/s

• 70 kg m/s

• 5 kg m/s

An object experiences an Impulse of 40 kgm/s in a time of 5 seconds. What force produced this impulse?

• 2 N

• 4N

• 6N

• 8N

An object has p_i of 20 kgm/s and then p_f of 30 kgm/s. If it took 2s, what is the force?

• 10N

• 4N

• 5N

• 50N

An object has P_i of 20 kgm/s ends with a P_f of 40 kgm/s. How long would a 5N force need to act?

• 3s

• 8s

• 7s

• 4s

A train has 10 seconds to stop. How much force is required for a change in momentum of 1000kg m/s?

• 1N

• 10N

• 100N

• 1000N

What is the change in an object's momentum?

• acceleration

• velocity

• impulse

• force