# PH 117 University of California Physics Exam Questions

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PH 117

University of California

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here are the answers. this was a simple test for me

PH 117 Final Exam Spring 2020 Name……………………………….
1.

Chris pulls a wagon 20 m horizontally with a force of 50 N directed at an angle as

depicted in the sketch. How much work does Chris do on the wagon?

800 J

2. Consider a ball thrown straight up in the air that eventually falls to the ground.
(A) At what position is its kinetic energy the greatest?
Kinetic energy is greatest at a point just before hitting the ground

Position is its gravitational energy the greatest?
Gravitational energy is greatest at a maximum vertical height

3. When driving an ordinary internal combustion engine car over the mountains what
happens to the gravitational energy that the car had at the top of a mountain when it comes
to rest at the bottom of the mountain?
The gravitational energy of the car will be slightly lower at the bottom of the mountain

4. When the speed of a moving car is doubled, how much more kinetic energy does it get?

When the speed of the car is doubled kinetic energy multi...

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