Physical Science Study Guide Chapter 11 ‘Work and Energy’ Test (Thursday, 5/3/12)
1. Define what Kinetic Energy is, what is the formula and what does each variable
mean?
2. Define what Potential Energy is, what is the formula and what does each variable
mean?
3. What is Mechanical Energy? Give some examples.
4. What is non-Mechanical Energy? Give some examples
5. A ball is falling from a given height. Explain the types energy involved and how
energy is being transformed.
6. What is the formula for Work and describe each variable plus their units.
7. What is the formula for Power and describe each variable and their units.
8. Give a complete definition of the Law of Conservation of Energy and provide an
example using a non-frictionless Roller Coaster.
9. Calculations:
Prob # Height (m)
1
2m
Velocity
(m/s)
5 m/s
2
4m
6 m/s
3
3 m/s
4
Mass (kg)
KE (J)
10 m
6
5m
Total
Energy
1200 J
2000 J
100 kg
1500 J
50 kg
800 J
25 kg
5
PE (J)
750 J
75 kg
1500 J
1000 J
Show Work for Each Problem in Above Table: ( PE = mgh and KE
= 1/2mv2 )
1.
2.
3.
4.
5.
6.