College Physics for AP® Courses

# Chapter 5

College Physics for AP® CoursesChapter 5

## Problems & Exercises

1.

$5.00 N 5.00 N size 12{5 "." "00"N} {}$

4.

(a) 588 N

(b) $1.96 m/s21.96 m/s2 size 12{1 "." "96""m/s" rSup { size 8{2} } } {}$

6.

(a) 3.29 m/s2

(b) 3.52 m/s2

(c) 980 N; 945 N

10.

$1 . 83 m/s 2 1 . 83 m/s 2 size 12{ - 1 "." "83"" m/s" rSup { size 8{2} } } {}$

14.

(a) $4.20 m/s24.20 m/s2 size 12{4 "." "20 m/s" rSup { size 8{2} } } {}$

(b) $2.74 m/s22.74 m/s2 size 12{2 "." "74 m/s" rSup { size 8{2} } } {}$

(c) $–0.195 m/s2–0.195 m/s2 size 12{"-0" "." "195 m/s" rSup { size 8{2} } } {}$

16.

(a) $1.03×106N1.03×106N size 12{8 "." "91" times "10" rSup { size 8{5} } N} {}$

(b) $3.48×105N3.48×105N size 12{2 "." "98" times "10" rSup { size 8{5} } N} {}$

18.

(a) $51.0 N51.0 N size 12{"51" "." 0N} {}$

(b) $0.720 m/s20.720 m/s2 size 12{0 "." "720""m/s" rSup { size 8{2} } } {}$

20.

$115 m/s; 414 km/hr 115 m/s; 414 km/hr size 12{"115"" m/s; ""414"" km/hr"} {}$

22.

$25 m/s; 9.9 m/s 25 m/s; 9.9 m/s size 12{"23" "." "7 m/s; 9" "." "9 m/s"} {}$

24.

$2 . 9 2 . 9 size 12{2 "." 9} {}$

26.

$η = F s r v = kg ⋅ m/s 2 m ⋅ m/s = kg m ⋅ s η = F s r v = kg ⋅ m/s 2 m ⋅ m/s = kg m ⋅ s size 12{ left [η right ]= { { left [F rSub { size 8{s} } right ]} over { left [r right ] left [v right ]} } = { {"kg" cdot "m/s" rSup { size 8{2} } } over {m cdot "m/s"} } = { {"kg"} over {m cdot s} } } {}$

28.

$0 . 76 kg/m ⋅ s 0 . 76 kg/m ⋅ s size 12{0 "." "76"" kg/m" cdot s} {}$

29.
$1 . 90 × 10 − 3 cm 1 . 90 × 10 − 3 cm size 12{1 "." "90" times "10" rSup { size 8{ - 3} } "cm"} {}$
31.

(a)1 mm
(b) This does seem reasonable, since the lead does seem to shrink a little when you push on it.

33.

(a)9 cm
(b)This seems reasonable for nylon climbing rope, since it is not supposed to stretch that much.

35.

8.59 mm

37.
$1 . 49 × 10 − 7 m 1 . 49 × 10 − 7 m size 12{1 "." "49" times "10" rSup { size 8{ - 7} } m} {}$
39.

(a) $3.99×10−7m3.99×10−7m size 12{3 "." "99" times "10" rSup { size 8{ - 7} } m} {}$

(b) $9.67×10−8m9.67×10−8m size 12{9 "." "67" times "10" rSup { size 8{ - 8} } m} {}$

41.

$4×106N/m24×106N/m2 size 12{4 times "10" rSup { size 8{6} } `"N/m" rSup { size 8{2} } "." } {}$. This is about 36 atm, greater than a typical jar can withstand.

43.

1.4 cm

## Test Prep for AP® Courses

1.

(b)

3.

(c)

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