MomentumImpulseQuizA2b

An object moving forward with a speed has which of the following physical quantities or properites?

• Impulse

• Momentum

• Force

Which two of the following that are considered scalar quantities?

(Cannot be negative, No Direction)

• Momentum

• Mass

• Time

• Impulse

Momentum is measured in

• Newtons

• Joules

• Watts

• kg•m/s

______ forces change momentum

• Nonconservative

• External (Outside)

• Conservative

• Internal (Inside)

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. [ I = F(t) ]

• 1 N.s

• 6 N.s

• 66 N.s 

• None of these

Compared to a sports car moving at 30 miles per hour, the same sports car moving at 60 miles per hour has

• twice as much momentum.

• four times as much momentum.

• the same momentum.

• three times as much momentum

Air bags reduce the potential for injury during an accident by:

• Increasing the Force acting on you

• Decreasing your original momentum

• Increasing the duration of time over which the collision occurs

• Reversing the Impulse of the event

What is the momentum of the object in the image?

• 8 $\frac{kg\cdot m}{s}$

• 2 $\frac{kg\cdot m}{s}$
  

• 15 $\frac{kg\cdot m}{s}$

• -15 $\frac{kg\cdot m}{s}$

Newton's 3rd Law states that...

• An object in motion will stay in motion unless acted upon by an imbalanced force.

• For every agent's action, there is an equal and opposite reaction of force on the agent.

Momentum is a scalar quantity.

• True

• False