B. Read each item carefully and write the letter of the correct answer on the blank before the number.
(5 pts.)
1. The ingredients needed to determine work done in physics are
a. force and displacement
c. force and speed
b. displacement and speed
d. none of the above
2. The rate of doing work is known as
a force
b. distance
C. power
d. none of these
3. No work is done on an objectif
a. the force is zero
b. the object is at rest
a the force is perpendicular to the direction of the motion
d. all of the above
4. Work is done on an object when
a, it is lifted to a certain height
b. it is pulled a certain distance along the force
c. it is pushed a certain distance along the force
d. all of the above
5. It is the capacity to do work
b. Power
c. Force
d. None of these