College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Newton’s Third Law of Motion
The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”
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Only E,G and I

A particle moves according to a law of motions = f(t) = 0.01t -0.12t3, t> 0, where t is measured in seconds and s in feet. (a) Find the velocity at time t. v(1) = 0.04 - 0.367? ft/s (b) What is the velocity after 4 s? v(4) = 32 V ft/s (c) When is the particle at rest? t =0 V s (first time) t =9 v s (second time) (d) When is the particle moving in the positive direction? (If you need to use -co or co, enter -INFINITY or INFINITY.) ( 9 infinity (e) Find the total distance traveled during the first 10 S. 43 X feet (f) Draw a diagram to illustrate the motion of the particle. (Do this on paper. Your instructor may ask you to turn in this graph.) (g) Find the acceleration at time t and after 4 s. a(t) = a(4) =| x ft/s? Enter a number. (h) Graph the position, velocity, and acceleration functions for 0 <t S 10. (Do this on paper. Your instructor may ask you to turn in this graph.) (1) When is the particle speeding up? (If you need to use -o or o, enter -INFINITY or INFINITY.) When is it slowing down?
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Transcribed Image Text:A particle moves according to a law of motions = f(t) = 0.01t -0.12t3, t> 0, where t is measured in seconds and s in feet. (a) Find the velocity at time t. v(1) = 0.04 - 0.367? ft/s (b) What is the velocity after 4 s? v(4) = 32 V ft/s (c) When is the particle at rest? t =0 V s (first time) t =9 v s (second time) (d) When is the particle moving in the positive direction? (If you need to use -co or co, enter -INFINITY or INFINITY.) ( 9 infinity (e) Find the total distance traveled during the first 10 S. 43 X feet (f) Draw a diagram to illustrate the motion of the particle. (Do this on paper. Your instructor may ask you to turn in this graph.) (g) Find the acceleration at time t and after 4 s. a(t) = a(4) =| x ft/s? Enter a number. (h) Graph the position, velocity, and acceleration functions for 0 <t S 10. (Do this on paper. Your instructor may ask you to turn in this graph.) (1) When is the particle speeding up? (If you need to use -o or o, enter -INFINITY or INFINITY.) When is it slowing down?
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