3.5: Selected Answers
- Page ID
- 45954
1 t2 = 1.86 s
2 v1 = 11.2 m/s
3 \(\delta\)rx = 8.3 m
4 v1 = 3.28 m/s
5 v1 = 31.4 m/s
6 The ball hits people in the stands behind home plate. (It sails 10.7 m above home plate.)
7 \(\theta\) = 44°
8 \(\theta\) = 20.1°, 68.8°
9 \(\theta\) = 18.6°, 77.2°
10 No.
11 Yes, as long as the cannon is set to 16.4°.
12 t2 = 0.56 s
13 t2 = 3.22 s
14 t2 = 3.22 s
15 335 m from home
16 t2 = 40 s a = 0.15 m/s2
17 52.6 m from ship
18 25.7 m from ship
19 t2 = 33.5 s \(\theta\) = 188° from line initially between ship and man
20 \(\mu\)s ≥ 0.256
21 a = 0 m/s2
22 a = 0.94 m/s2
23 m = 65.2 kg
24 Fsf = 56 N
25 Fsf = 186 N up
26 a = 1.39 m/s2 down
27 a = 0.84 m/s2
28 m = 51.4 kg
29 t2 = 7.4 s
30 r2x = 14 m
31 \(\mu\)k = 0.085
32 F = 270 N
33 F = 55.9 N
34 a = 0.73 m/s2
35 a = 0.66 m/s2
36 a = 0 m/s2
37 Fmax = 980 N
38 Fmax = 359 N
39 Fmax = 947 N
40 Fmin = 210 N
41 a. r2 = 2.23 m b. t2 = 1.49 s
42 a. v2 = 2.52 m/s b. r2 = 3.78 m
43 m = 51.4 kg
44 a. r2 = 14 m b. t2 = 1.75 s
45 v2 = 27 m/s
46 \(\mu\) = 0.14
47 v2 = 14.9 m/s
48 v2 = 8.89 m/s
49 v2 = 14.3 m/s
50 \(\theta\) = 56°
51 v2 = 5.8 m/s
52 v2audi = 12.8 m/s
53 v2audi = 4.86 m/s