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Physics 1 Problem Solutions 22

# Physics 1 Problem Solutions 22 - 18 Chapt 2 One-Dimensional...

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Unformatted text preview: 18 Chapt. 2 One-Dimensional Kinematics a) radicalBigg ∑ N i =1 v 2 i N . b) N ∑ N i =1 1 /v i . c) ∑ N i =1 v i N . d) ∑ N i =1 v i t i ∑ N i =1 t i . e) N summationdisplay i =1 v i . 002 qmult 00400 1 1 2 easy memory: acceleration and speed Extra keywords: physci 29. If an object’s speed changes, the object: a) stops. b) accelerates. c) starts. d) goes forward. e) hesitates. 002 qmult 00410 2 5 2 moderate thinking: acceleration opposite velocity Extra keywords: physci 30. Say you are moving in the positive x-direction, but your speed is decreasing. a) Your acceleration points in the POSITIVE x-direction. b) Your acceleration points in the NEGATIVE x-direction. c) You are NOT accelerating at all. You are decelerating. d) Your acceleration points PERPENDICULAR to the x-axis. e) Your acceleration points in the POSITIVE x-direction. Acceleration always points in the same direction as velocity....
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