a) 1.993 x 104 b) 1.993 x 10-4 c) 1.993 x 10-3 d) 1993 x 107 e) 199.3 x 10-2
2. Fundamental units of the SI system:
a) kilogram, centimeter, second
b) centimeter, meter, second
c) gram, meter, second
d) gram, centimeter, second
e) kilogram, meter, second
3. A bicyclist on the bicycle path in Corwin travels five miles in 20 minutes. What is her speed in feet/hour? (1 mile = 5280 feet)
a) 0.045 b) 22.0 c) 1.26 X 10-5 d) 352.0 e) 7.92 X 104
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4-6. A dragster starts from rest with a constant acceleration of 23 m/s2.
4. When t = 3s, its velocity is _____ m/s.
a) 34.5 b) 23 c) 103.5 d) 69 e) 207
5. When it has traveled 1000 m, its speed is _____ m/s.
a) 46000 b) 214 c) 19600 d) 140 e) 152
6. An Indy race car moving at a constant velocity of 35 m/s passes the dragster as it first starts moving. When t = _____ s, the dragster will catch up with the Indy car.
a) 3.04 b) 1.31 c) 1.52 d) 1.74 e) 0.66
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7. A PHY 111 student’s auto is moving with constant acceleration. Which one of the follow statements about the auto’s motion must always be true?
a) Its acceleration changes by the same amount each second.
b) Its speed increases by the same amount each second.
c) It moves the same distance each second.
d) Its velocity changes by same amount each second.
e) Its direction of motion changes each second.
8. A PHY 101 student drops a microbiology textbook off of a bridge and sees it hit the water 3.0 s later. The bridge is ____ m above the water.
a) 29.4 b) 22.1 c) 14.7 d) 88.2 e) 44.1
9. When a watermelon is released from rest and falls in the absence of friction, which of the following is true concerning its motion?
a) Both its acceleration and its velocity are constant.
b) The velocity and acceleration are in opposite directions.
c) Its acceleration is constant.
d) Its velocity is constant.
e) Neither its acceleration nor its velocity is constant.
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10. The angle A in Figure 1 is _____o.
a) 57.4 b) 28.3 c) 61.7 d) 41.4 e) 32.6
11. The hypotenuse in Figure 1 is
a) 20 b) 14.8 c) 7 d) 218 e) 13
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12. I may not know much but I do know this course is _____ .
a) GL 123 b) CHM 422 c) BIO 302 d) MTH 211 e) PHY 111
13. A displacement vector has a magnitude of 17 m. The x-component of this vector can never be
a) greater than 17 m. b) equal to the y-component. c) negative.
d) positive. e) zero.
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14-15. The x and y components of vectors A and B are:
Ax = -3.0 m Ay = -2.5 m Bx = 4.5 m By = 3.0 m
14. The magnitude of A + B is _____ m.
a) 3.9 b) 5.4 c) 1.6 d) 2.5 e) 9.3
15. The angle that A + B makes with the +x axis is _____ degrees.
a) 18.4 b) 70.5 c) 71.6 d) 36.3 e) 19.5
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16. The x-component of the vector in Figure 2 is _____ .
a) -3.41 b) 8.36 c) 9.96 d) 9.19 e) 15.5
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17-20. Jack Nicholas, while standing at the edge of the roof of a building, drives a golf ball horizontally over the side. The ball has an initial velocity of 13.5 m/s. The ground all around the building is level and the ball strikes the ground 3.5 s later.
17. The building is _____ m tall.
a) 34.4 m b) 60 m c) 120 m d) 47.3 m e) 15.8 m
18. The ball strikes the ground _____ m from the edge of the building.
a) 107.3 b) 60.0 c) 9.3 d) 47.3 e) 34.3
19. A second golf ball is dropped over the edge of the building at the same time the first ball is driven off. Which golf ball strikes the ground first?
a) both strike simultaneously
b) the driven ball
c) the dropped ball
d) the one with the greater acceleration
e) the one with the greater velocity
20. Jack drives a second golf ball with a velocity of 20 m/s at an angle of 60° above the horizontal. The horizontal component of its instantaneous velocity at the exact top of its trajectory is _____ m/s.
a) zero b) 10 c) 17.3 d) 20
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