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Laabri

GPE and KE Practice

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Last updated 2 months ago
20 Nsɛmmisa
Hyɛ no nsow a efi ɔkyerɛwfo no hɔ:
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Energy Unit - J

Speed unit - m/s

mass unit - kg

height unit - m

weight unit - N

g = 9.8 m/s2

Go through the following notes before answering this practice: https://app.peardeck.com/student/txikofoxl

Energy Unit - J

Speed unit - m/s

mass unit - kg

height unit - m

weight unit - N

g = 9.8 m/s2

Go through the following notes before answering this practice: https://app.peardeck.com/student/tlmxuulos

Asemmisa {{asɛmmisaAhyɛnsode}}
1.

As a ball is thrown up into the air the Kinetic Energy ________ and the Gravitational Potential Energy _____

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

How much does the KE change if mass doubles

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3.

How much does the KE change if velocity doubles

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4.

How much does the KE change if height is doubled

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5.

How much does the GPE change if height is doubled

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

A jogger with a mass of 60 kg is moving at 2 m/s. What is the jogger's kinetic energy?

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

A ball with a mass of 2 kg is moving at a speed of 3 m/s. What is the ball's heat that is generated?

Asemmisa {{asɛmmisaAhyɛnsode}}
8.

An object has a mass of 2 kg and a kinetic energy of 25 J. What is the object's speed?

Asemmisa {{asɛmmisaAhyɛnsode}}
9.

What is the GPE of a book that has a mass of 1kg that is sitting on a shelf that is 2 m above the ground?

Asemmisa {{asɛmmisaAhyɛnsode}}
10.

How high above the ground is a ball with a mass of 2 kg that has a GPE of 70 J?

Asemmisa {{asɛmmisaAhyɛnsode}}
11.

A rock climber is 200 m above the ground and has a GPE of 10,000 J. What is the climber's mass?

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12.

A high jumper has a mass of 85.0 kg and a gravitational potential energy of 1970J. How high does he jump?

Asemmisa {{asɛmmisaAhyɛnsode}}
13.

What is the gravitational potential energy of a 73 kg tourist on a tower that is 323 m above the ground?

Asemmisa {{asɛmmisaAhyɛnsode}}
14.

An automobile to be transported by ship is raised 7.3 m above the dock. If its gravitational potential energy is 66,375 J, what is the car’s mass?

Asemmisa {{asɛmmisaAhyɛnsode}}
15.

A sea turtle has a mass of 860 kg. If the gravitational potential energy of the turtle is 20,500 J as it is being lifted onto a ship, how high above the water is the turtle?

Asemmisa {{asɛmmisaAhyɛnsode}}
16.

A 1750 kg weather satellite has a gravitational potential energy of 169,311,000J. How high above the earth’s surface is the satellite?

Asemmisa {{asɛmmisaAhyɛnsode}}
17.

The world record for pole vaulting is 6.15 m. If the vaulter’s gravitational potential energy is 4942 J, what is his mass?

Asemmisa {{asɛmmisaAhyɛnsode}}
18.

If a bird lands on top of a tower and has a gravitational potential energy of 2033 J, what is the bird’s weight? The peak of the tower is 629 m above the ground. (Hint: Weight is measured in Newtons)

Asemmisa {{asɛmmisaAhyɛnsode}}
19.

At which point(s) is the KE the greatest?

Asemmisa {{asɛmmisaAhyɛnsode}}
20.

At which point(s) is the GPE the greatest?