Question

Recalling Ideas
1. Select the correct option:
1. Work is determined by
(a) subtracting force from the displacement that occurs.
(b) adding force and displacement that occurs.
C) multiplying force and displacement that occurs.
d) dividing force by the displacement that occurs,
2. The SI unit of work is
(a) dyne
(d) kilogram
(b) joule
O c) newton
3. What happens to the potential energy when a body falls from a height of 2 m and comes to
rest?
(a) No change in potential energy
(b) Potential energy decreases by half
© Whole of the potential energy changes to heat and sound energy
d) None of the above
4. Kinetic energy is
(a) the stored energy
(b) the energy in motion
(C) neither stored energy nor the energy in motion
(d) none of these
5. Hydroelectric plants produce electricity from
(a) coal
(b) solar energy
(C) moving water
(d) none of these
​

Answer 1

Answer:

Q.4-ans-(b) the energy in motion

Answer 2

Answer:

1.(d)

2.(b)

3.(d)

4.(c)

5.(b)