Question

A boy weighing 150 N goes ( a ) up and ( b) down a flight of stairs. The vertical distance between the floor is 5.5 m. How much work is done by gravity?

Answer 1

e

Answer 2

e

Answer 3

e

Answer 4

e

Answer 5

e

Answer 6

e

Answer 7

e

Answer 8

e

Answer 9

e

Answer 10

e

Answer 11

e

Answer 12

e

Answer 13

e

Answer 14

e

Answer 15

e

Answer 16

e

Answer 17

e

Answer 18

e

Answer 19

e

Answer 20

e

Answer 21

e

Answer 22

e

Answer 23

e

Answer 24

e

Answer 25

e