Physics Semester 2 Final Review 2023

A 6 kg object has a momentum of 48 (kg x m)/s. What velocity was it traveling at?

• 8 m/s

• 0.125 m/s

• 288 m/s

• 7 m/s

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NGSS.HS-PS2-2

A ball with a mass of 6 kg rolls down a hill with a velocity of 3 m/s. What is its momentum?

• 2 kgm/s

• 6 kgm/s

• 12 kgm/s

• 18 kgm/s

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NGSS.HS-PS2-2

A 1500 kg car applies 8000 N of force and takes 4.5 seconds to slow to a stop. How fast was the car going?

• 12 m/s

• 16 m/s

• 24 m/s

• 32 m/s

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NGSS.HS-PS2-1

Two figure skaters push against each other and move in opposite directions. Skater A is 40 kg and moves at .8 m/s. Skater B is 42 kg. How fast is Skating B going?

• -0.8 m/s

• 0.8 m/s

• -0.6 m/s

• 0.6 m/s

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NGSS.HS-PS2-2

A person in a stationary raft is holding on to a bag (mass of whole system= 50 kg). They throw the 2 kg bag and begin moving at 0.6 m/s. With what velocity did they throw the bag?

• -28.8 m/s

• 28.8 m/s

• -14.4 m/s

• 14.4 m/s

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NGSS.HS-PS2-2

While driving in icy road conditions, a 940 kg Mazda Miata moving at 14 m/s east collides with a 2460 kg pickup truck sitting at a stoplight. Determine the post-collision speed of the entangled cars as they travel across the ice.

• 3.87 m/s west

• 3.87 m/s east

• 5.42 m/s west

• 5.42 m/s east

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What is the impulse of an object with a mass of 12 kg that slows from 10 m/s to 5 m/s?

• 30 m/s

• 40 m/s

• 50 m/s

• 60 m/s

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NGSS.HS-PS2-2

Crumple zones are designed to increase the time before the car reaches v=0 m/s to decrease

• mass

• change in momentum

• force

• car damage

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How much kinetic energy (K) does a baseball with a mass of 0.143 kg have if it is travelling at a velocity of 41.1 m/s?

• 120.8 joules

• 89.7 joules

• 108.3 joules

• 156.6 joules

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NGSS.HS-PS3-2

If a 3.2 Kg hammer was dropped from a construction building from a height of 40 meters, and hit a worker on the head. What velocity did the hammer hit is head? The worker is 1.8 meters tall

• 9.8 m/s

• 27.6 m/s

• 65.5 m/s

• 50 m/s

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