momentum and Impulse Exit

Which of the following has the least amount of momentum?

• An ant walking along the ground
• An ant at rest
• An elephant walking
• An elephant running

Momentum depends on an object's mass and its ____________.

• Inertia
• Velocity
• Potential energy
• Height

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 

• 55 kg*m/s
• 100 kg*m/s
• 250 kg*m/s
• 500 kg*m/s

Determine the momentum of 1000-kg car moving northward at 20 m/s......... 

• 20000 N
• 20000 Joules
• 20000 Kg * m/s
• 20000 kg * m/s north

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg

How much momentum does a stationary battle ship have if it has a mass of 2,575,000 kg?

• 2,575,000 N
• 2,575,000 kg m/s
• 0 Momentum requires mass and velocity
• none of the above

An object with a mass of 3 kg has a momentum of 75 kg•m/s. What is its velocity?

• 0.4 m/s

• 7.1 m/s

• 72 m/s

• 25 m/s

Which 2 quantities determine how much impulse is applied to an object?

• time (t)

• velocity (v)

• Force (F)

• mass (m)

Impulse = Force applied x time applied

• True

• False

The impulse-momentum theorem states that

• the impulse on an object is equal to the change in momentum it causes 
• the force on a moving object is equal to the magnitude of the impulse.
• the impulse on an object is greater than the change in momentum it causes 
• the impulse on an object is less than the change in momentum it causes