Physics Final Exam

What determine the amount of gravitational force an object experiences?

• Momentum

• Mass

• Distance between the objects

• Speed

• Inertia

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What is impulse?

• Change in velocity

• Chang in kinetic energy

• Change in momentum

• Change in force

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A 1.2 kg ball has a momentum of 24 kg·m/s. What is the ball's speed?

• 10 m/s

• 50 m/s

• 20 m/s

• 30 m/s

Tags

NGSS.HS-PS2-2

A truck moves with a velocity of 22 m/s to the west. The mass of the truck is 4.2×10⁷kg. What velocity would a 3500 kg car need to have in order to have the same momentum as the truck?

• 100,000 m/s

• 100 m/s

• 45,000 m/s

• 264,000 m/s

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NGSS.HS-PS2-2

A rollercoaster train is 1/2 down the track. What are the correct percentages of GPE and KE at this position?

• TME = 100% GPE + 0% KE

• TME = 0% GPE + 100% KE

• TME = 50% GPE + 50% KE

• TME = 75% GPE + 25% KE

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A rock with a mass of 50.0 kg is placed at the top of a hill 5.0 meters high. What is the rock's gravitational potential energy?

• 206 J

• 630 J

• 686 J

• 2450 J

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NGSS.HS-PS2-4

A helicopter has a mass of 1,500 kg. It is flying at a speed of 50 m/s at an altitude of 150 meters above the ground. What is the total mechanical energy (TME) of the helicopter?

• 1,176,000 J

• 1,960,000 J

• 4,080,000 J

• 3,600,000 J

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NGSS.HS-PS3-1

Jessica and Mark climbed 25 stairs in 40 seconds. Jessica's mass was 65 kg, and Mark's mass was 85 kg. Which person used the most power?

• Jessica

• Mark

• They were equal.

• Power for both was 0 W.

Which of the following can be used to find wavelength?

• Crest to crest

• Crest to trough

• Trough to zero displacement

• Trough to trough

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NGSS.HS-PS4-1

What has the highest energy on the EM spectrum?

• Infrared

• Microwaves

• Gamma Rays

• Radio Waves

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