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1) A car initially at rest at a traffic light accelerates at 3m/s' when the light turns green. After 4s, the position of the car (in m) is: A) 24 B) 16 C) 8 D) 12 E) 6 2) A ball is dropped from a window 60m ahoun ground (in

1) A car initially at rest at a traffic light accelerates at 3m/s' when the light turns green. After 4s, the position of the car (in m) is: A) 24 B) 16 C) 8 D) 12 E) 6 2) A ball is dropped from a window 60m ahoun ground (in

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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14 15 16 17 1) A car initially at rest at a traffic light accelerates at 3m/s when the light turns green. After 4s, the position of the car (in m) is: A) 24 B) 16 C) 8 2) A ball is dropped from a window 60m above the ground. The velocity of the ball when it strikes the ground (in m/s) is: D) 12 E) 6 A) 34.3 В) 24.3 C) 19.6 D) 14.3 3) A ball is kicked from ground level with a velocity of 16m/s at an angle of 30° to the horizontal direction. When does it reach its greatest higher (in s)? E) 8.3 A) 0.82 B) 1.63 C) 1.28 D) 1.02 E) 1.84 4) Two vectors, A= 2x+3y and B= 4x-8y. The magnitude of A+B is: A) 4.3 B) 5.1 C) 7.8 D) 6.4 E) 9.2 5) An ice hockey player strikes a puck of mass 170g with his stuck, accelerating it along the ice from rest to speed of 20m/s over a distance of 40cm. What force must he exert (in N)? (Assume the acceleration is constant and without friction) A) 48 B) 72 С) 85 D) 96 E) 57 6) A 80kg box standing on a floor has a coefficient of static friction of 0.5. A boy approaches the box and leans horizontally against it. The maximum force the boy can exert before the box begins to slip (in N) is: C) 549 D) 332 E) 392 A) 618 B) 425 7) From figure below, the torques due to F1 and F2 relative to point p (in N.m) is: 4m- 2m- F1=6N F-8N/30 E) 0 D) 10.1 C) - 11.2 В) 11.2 A) 12.4
Transcribed Image Text:14 15 16 17 1) A car initially at rest at a traffic light accelerates at 3m/s when the light turns green. After 4s, the position of the car (in m) is: A) 24 B) 16 C) 8 2) A ball is dropped from a window 60m above the ground. The velocity of the ball when it strikes the ground (in m/s) is: D) 12 E) 6 A) 34.3 В) 24.3 C) 19.6 D) 14.3 3) A ball is kicked from ground level with a velocity of 16m/s at an angle of 30° to the horizontal direction. When does it reach its greatest higher (in s)? E) 8.3 A) 0.82 B) 1.63 C) 1.28 D) 1.02 E) 1.84 4) Two vectors, A= 2x+3y and B= 4x-8y. The magnitude of A+B is: A) 4.3 B) 5.1 C) 7.8 D) 6.4 E) 9.2 5) An ice hockey player strikes a puck of mass 170g with his stuck, accelerating it along the ice from rest to speed of 20m/s over a distance of 40cm. What force must he exert (in N)? (Assume the acceleration is constant and without friction) A) 48 B) 72 С) 85 D) 96 E) 57 6) A 80kg box standing on a floor has a coefficient of static friction of 0.5. A boy approaches the box and leans horizontally against it. The maximum force the boy can exert before the box begins to slip (in N) is: C) 549 D) 332 E) 392 A) 618 B) 425 7) From figure below, the torques due to F1 and F2 relative to point p (in N.m) is: 4m- 2m- F1=6N F-8N/30 E) 0 D) 10.1 C) - 11.2 В) 11.2 A) 12.4
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