1. Which of these equations gives the amount of work done?
a. Work= F/d
c. Work= Fd
b. Work= Fgd
d. Work= F/t
2. How much work is done in holding a 1-kg object 2 m above the ground?
b. 2
C. 9.8
d. 19.6
a. Zero
Refer to this situation in answering questions 3-4.
An object falls freely from a certain height.
3. Which of the following happens to the object?
a. It loses PE and gains KE
c. It loses both PE and KE
b. It gain PE and loses KE
d. It gains both PE and KE
4. The PE of the object at the highest point compared to its KE at the lowest
point is
a. lesser
b. greater
c. equal
d. not related
5. Which of the following is NOT a unit of power?
a. watt
b. b. horsepower
C. c. joule second
d. d. Newton meter per second
6. A 1-kg ball rolling with a speed of 2m/s has a kinetic energy equal to
a. 1 J
b. 2 J
C. 43
d. 8J
7. The rate at which work is done is called
a. power
c.kinetic energy
b. Displacement
d. potential energy​