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KEY_____________
Name___________
Date________
Section______
Energy Calculations Review
Use this sheet to help you review for the upcoming Energy Calculations quiz.
In the space below, write down the formulas to find weight and velocity. Then solve the
problems that follow. Round to the nearest hundredth!
W= mg
V=d/t
1. An object has a mass of 1475 g. What is the weight of that object? (Remember to
convert to kilograms!)
14.47 N
2. An object travels 15.00 m in 7.65 s. What is the velocity of the object?
1.96 m/s
In the space below, write down the formulas for potential energy and kinetic energy.
Then solve the problems that follow.
PE=wh
KE= ½ mv2
3. An object has a weight of 22.47 N. It is 12.22 m above the ground. What is the
potential energy of this object?
274.58 J
4. An object has a kinetic energy of 22500.00 J. It has a mass of 250.00 kg. What is
the velocity of this object?
13.42 m/s
In the space below, write down the formulas for finding force and work. Then solve the
problems that follow.
F=ma
W=Fd
5. An object is pushed with a force of 12.88 N. It has a mass of 12.75 kg. What is
the acceleration of the object?
1.01 m/s2
6. An object is pushed 67.55 m with a force of 23.11 N. How much work was done
on the object?
1561.08 J
Now try solving the following two step problems.
7. An object weighs 55.00 N. It is resting 75.99 m above the ground. What is the
potential energy of this object in calories?
997.48 cal
8. An object is pushed 22.34 m. It has a mass of 13.05 kg and an acceleration of
9.75 m/s2. How much work was done on the object?
2842.54 J
9. An object travels 534 meters in 2 minutes. It has a mass of 56.00 kg. What is the
kinetic energy of the object?
554.40 J
10. An object has a mass of 750 g. It is resting 15.00 meters above the ground. What
is the potential energy of the object?
110.40 J