College Physics for AP® Courses

Chapter 1

College Physics for AP® CoursesChapter 1

Problems & Exercises

1.
1. $27 . 8 m/s 27 . 8 m/s size 12{"27" "." 8"m/s"} {}$
2. $62.1 mph62.1 mph size 12{"62" "." 1" mph"} {}$
3.

$1.0 m s = 1 . 0 m s × 3600 s 1 hr × 1 km 1000 m 1.0 m s = 1 . 0 m s × 3600 s 1 hr × 1 km 1000 m size 12{ { {1 "." "0 m"} over {s} } = { {1 "." "0 m"} over {s} } times { {"3600 s"} over {"hr"} } times { {1"km"} over {"1000 m"} } } {}$

$=3.6 km/h=3.6 km/h size 12{ {}=3 "." 6" km/h"} {}$.

5.

length: $377 ft377 ft size 12{"377"" ft"} {}$; width: ; .

7.

$8 . 847 km 8 . 847 km size 12{8 "." "847"" km"} {}$

9.

(a)

(b) $40 km/My40 km/My size 12{"40"" km/My"} {}$

11.

2 kg

13.
1. $85 . 5 to 94 . 5 km/h 85 . 5 to 94 . 5 km/h size 12{"85" "." 5" to 94" "." "5 km/h"} {}$
2. $53 . 1 to 58 . 7 mi/h 53 . 1 to 58 . 7 mi/h size 12{"53" "." 1" to 58" "." "7 mi/h"} {}$
15.

(a)

(b)

(c)

17.
1. 3
2. 3
3. 3
19.

a) $2.2%2.2% size 12{3 "." 3%} {}$

(b) $59 to 61 km/h59 to 61 km/h size 12{"59 to 61 km/h"} {}$

21.

$80 ± 3 beats/min 80 ± 3 beats/min size 12{"80" +- 3`"beats/min"} {}$

23.

$2 . 8 h 2 . 8 h size 12{2 "." 8" h"} {}$

25.

$11 ± 1 cm 3 11 ± 1 cm 3 size 12{"11" +- 1" cm" rSup { size 8{3} } } {}$

27.

$12 . 06 ± 0 . 04 m 2 12 . 06 ± 0 . 04 m 2 size 12{"12" "." "06" +- 0 "." "04"" m" rSup { size 8{2} } } {}$

29.

Sample answer: $2×1092×109 size 12{2 times "10" rSup { size 8{9} } } {}$ heartbeats

31.

Sample answer: $2×10312×1031 size 12{2 times "10" rSup { size 8{"31"} } } {}$ if an average human lifetime is taken to be about 70 years.

33.

35.

(a) $10121012 size 12{"10" rSup { size 8{"12"} } } {}$ cells/hummingbird

(b) $10161016 size 12{"10" rSup { size 8{"16"} } } {}$ cells/human