PH101 (Mirov)

 

HOMEWORK # 7

 

Textbook: Cutnell, Johnson, PHYSICS

 

Chapter  7

Problems: 7, 13, 16, 18, 19, 20, 30, 34, 43, 44

Due: May 16, 2001

 

 

ANSWERS TO HOMEWORK # 7

 

Problem#

7

13

16

18

19

Answer

+69 N

+4.28 N×s

upward

7.1x105 m/s

96 kg

(a) –0.14 m/s

(b) –7.1x10-3m/s

 

 

Problem #

20

30

34

43

44

Answer

1.5 m

182 m/s

319 m/s

6.46x10-11 m

3.0 g

7.0 g