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Here are the answers to SPH4U EXAM REVIEW #2.



number

answer

1

(a) 8.9 m/s

(b) 1.19 s

(c) 0.33 s

2

6.6 s

3

(a) 2.3 m/s2 [up]

(b) 2.4 N tension

(c) 21 N upward on top string

4

41 cm

5

(a) student has larger momentum

(b) student also has larger kinetic energy

(c) bullet more dangerous due to small surface area

6

12 m/s

7

0.76 s

8

0.19 m/s

9

10

0.00108 T

11

4.5 cm

12

4.0 m

13

9.95 o

14

more than enough to get to sea level (4.21 x 10 3m

15

0.468 MeV

16

not possible since kinetic energy larger after than before

17

0.42 m/s

18

3.2 x 107 m/s

19

5.4 x 106 V