2.4 Momentum & Impulse

The units for momentum are

• kg
• m/s
• kg-m/s
• kg/m/s

Tags

NGSS.HS-PS2-2

The units for Impulse are

• N/s
• N-s
• N
• m/s

The formula for momentum is

• mass divided by velocity
• mass multiplied by velocity
• velocity divided by mass
• Force times acceleration

Tags

NGSS.HS-PS2-2

The law of conservation of momentum states that, 

• p before is less than p after
• p before is the same as p after
• p before is more than p after

Tags

NGSS.HS-PS2-2

Energy is lost during this type of collision

• elastic
• inelastic
• energy is lost in both types of collisions

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NGSS.HS-PS3-1

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

• 0.1 kg-m/s
• 1 kg-m/s
• 10 kg-m/s
• 100 kg-m/s

Tags

NGSS.HS-PS2-2

A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?

• 25 m/s
• 375 m/s
• 25 kg m/s
• 375 kg m/s

Tags

NGSS.HS-PS2-2

An open cart on a level surface is rolling without frictional loss through a vertical downpour of rain. As the cart rolls, an appreciable amount of rainwater accumulates in the cart. The speed of the cart will

• increase because of conservation of mechanical energy
• decrease because of conservation of momentum
• decrease because of conservation of mechanical energy
• remain the same because the raindrops are falling perpendicular to the direction of the cart's motion

Tags

NGSS.HS-PS2-2

A 9 kg blob moving at 5 m/s collides and sticks to a second blob with a mass of 5 kg. If the two bobs stick together, what will the velocity of the two blobs move at?

• 3.57 m/s
• 3.2 m/s
• 10.0  m/s
• 9.0  m/s

Tags

NGSS.HS-PS2-2

The 0.5 kg ball travelling at 3ms^-1 hits the stationary 0.8 kg ball. Afterwards the 0.5 kg ball is travelling at 0.5 ms^-1. Calculate the 0.8 kg balls velocity.

• 2 ms^-1

• 1.85 ms^-1

• 0.25 ms^-1

• 0.1 ms^-1