Momentum and Impulse

A measure of "how hard it is to stop" something.

• momentum

• impulse

• Force

• velocity

The formula for momentum is...

• F = m(a)

• m = F(t)

• p = mv

• d = vit + 1/2at²

Which term is most closely related to "a sudden change in momentum?"

• average velocity

• final velocity

• momentum

• impulse

The velocity of an object doubles. As a result, the momentum of the object...

• remains constant

• also doubles.

• cuts by half.

• increase by 4x.

A 30 kg car has a constant force of 10 N applied for 2 seconds. What is its acceleration?

• 600 m/s²

• 20 Ns

• 0.333 m/s²

• 15 kgN

A 30 kg car has a constant force of 10 N applied for 2 seconds. How much does it change momentum?

• 600 m/s²

• 20 Ns

• 0.333 m/s²

• 15 Ns

A 30 kg car has a constant force of 10 N applied for 2 seconds. Which formula could you use to calculate change momentum?

• I = F(t)

• I = pf - pi

• p = mv

• F = m(a)

A 30 kg car starts from rest and speeds up to 25 m/s in about 3 seconds. Which formula could you use to calculate change momentum?

• I = F(t)

• I = pf - pi

• p = mv

• F = m(a)

A 30 kg car and a 30 kg truck are both driving 25 m/s, when they hit the brakes and both stop. One stops suddenly in 2 seconds and the other more slowly in 5 seconds. Which is true?

• Same impulses, different forces.

• Different impulses, different forces.

• Same impulses, same forces.

A 30 kg car and a 30 kg truck are both driving 25 m/s, when they hit the gas and both accelerate. One accelerates suddenly to 50 m/s and the other more slowly to 40 m/s. Which is true?

• Same impulses, different forces.

• Different impulses, different forces.

• Same impulses, same forces.