Make your own free website on Tripod.com

Answers to:

YET ANOTHER DYNAMICS REVIEW


number

answer

1

T

2

F

3

F

4

T

5

F

6

T

7

T

8

T

9

F (confusing wording: this answer assumes that two people together push with the same force as the single person did)

10

T

11

four

12

inertia

13

first

14

net force, object’s mass

15

force of gravity, tension, equal

16

road, equal and opposite

17

net

18

zero

19

inertia is the tendency for an object to stay at rest or to continue travelling at a uniform velocity

20

when stopping a car, your head tends to move forward

21

a wagon accelerates forward when you apply an unbalanced force [forward]

22

when you push against a wall, the wall provides and equal and opposite force towards you

23

normal force, force of gravity, applied force, force of friction

24

(a) frictional force is 3.1 N [backwards]

(b) Acceleration is 1.5 m/s2 [forward]

 25

puck will slide for 0.49 seconds