
Ke and PE
Authored by Courtney Morfing
Physics
7th - 9th Grade
Used 4+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Malcolm's class has been assigned a project in which it is to build a four-wheeled vehicle to transport a soda can across the classroom. The car will be powered by stretching rubber bands around an axle before releasing the vehicle on the floor.
The vehicle will be powered by transforming _______ energy into _______ energy.
mechanical; thermal
thermal; mechanical
elastic potential; kinetic
kinetic; elastic potential
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The following diagram of a pendulum shows the path it takes as it swings back and forth.
As the pendulum moves from point 1 to point 2, what happens to its mechanical energy?
Kinetic energy is converted to potential energy and back again.
Potential energy is converted to kinetic energy only once.
Potential energy is converted to kinetic energy and back again.
Kinetic energy is converted to potential energy only once.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for Gravitational Potential Energy?
PE = mgh
KE = 1/2mv2
W = Fd
P = W/t
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for Kinetic Energy?
PE = mgh
KE = 1/2mv2
W = Fd
P = W/t
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s?
80 J
3.2 J
160 J
40 J
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the kinetic energy of a zorb and human with a total mass of 90Kg rolling at 10m/s?
3,700J
900J
4,500J
6,500J
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A golf pro swings his driver which has a mass of 0.75Kg at a velocity of 60 m/s. Calculate the kinetic energy of the club.
2700 J
16.9 J
1350 J
45 J
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