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WorksheetsEnergy Calculations
Total questions: 21
Worksheet time: 18mins
What kind of energy does a marble at the top of a hill have?
gravitational potential
chemical potential
kinetic
thermal
What is the correct unit for energy?
meters (m)
kilogram meters per second (kg m/s)
Newtons (N)
Joules (J)
What does conservation of energy mean?
Total energy increases
Total energy decreases
Total energy in the universe stays the same
What is the equation for calculating gravitational potential energy
mv
1/2 mv^2
mgh
Ft
If the marble had a mass of 0.3kg and the hill was 2.3 m tall, how much potential energy did it have at the top of the ramp?
2.3 J
0.23 J
6.9 J
5.2 J
If the 0.3 kg marble was moving at 6 m/s at the bottom of the ramp, how much kinetic energy did the marble have?
5.4 J
1.8 J
3 J
6 J
What is the equation for calculating kinetic energy?
mv
1/2 mv^2
mgh
Ft
If the 1.2 kg basketball rolls at 3 m/s, what is it's kinetic energy?
2.7
5.4
3.6
9
Alice kicks a soccer ball with a mass of 2.1 kg. The ball leaves the ground moving 30 meters per second. What is the kinetic energy of the soccer ball? (KE = 1/2mv2)
567 J
900 J
945 J
30 J
If the 1.2 kg basketball rolls at 3 m/s, what is it's kinetic energy? (KE = 1/2mv2)
2.7
5.4
3.6
9
If the marble had 6.9 J of (potential) energy at the top of the hill and 5.4 J of (kinetic) energy at the bottom of the hill, was energy conserved and why?
No because total energy in the universe decreased
Yes because the total energy in the universe changed
Yes because the total energy in the system stayed the same
Yes, but energy left the system
A 5 Kg body is having a Kinetic energy of 250 J. What is the velocity (or speed) of the body?
10 m/s
15 m/s
20 m/s
40 m/s
Calculate the potential energy of a car with a mass of 2,500 kg that is on a hill 100 meters above sea level.
250,000 J
2,450,000 J
2,451,663 J
248 J
Which of the following will have the greatest potential energy? PE = m x g x h
Where (at which letter) is the kinetic energy greatest?
A
B
C
D
At which of these positions is the kinetic energy the smallest?
A
B
C
D
Where is the potential energy the greatest?
A
B
C
D
At which positions does the car possess both kinetic and potential energy?
A and C
C and D
B and D
B, C, D and E
At position F, ALL of the energy has been transformed into which type of energy?
Potential energy
kinetic energy
Heat energy
Sound energy
