Explanation The expression for work is, W = F d (1) Here, F is the force. d is the distance travelled by the object on applying force. Since the work is directly proportional to the force so the effectiveness of the force is measured by knowing the work done by the force. Substitute m a for F in above expression. W = m a d (2) From the third equation of motion for constant acceleration in one dimension is, v 2 = u 2 + 2 a d Here, v is the final velocity. u is the initial velocity. a is the acceleration. Rearrange the above equation. a = ( v 2 − u 2 ) 2 d Substitute ( v 2 − u 2 ) 2 d for a in equation (4)

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Author: SERWAY

Publisher: Cengage Learning US

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Chapter 9, Problem 9.12CQ

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Whether the larger net force always produce a larger change in the kinetic energy than a smaller net force or not.

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Chapter 9, Problem 9.11CQ

Chapter 9, Problem 9.13CQ

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Whether the larger net force always produce a larger change in the kinetic energy than a smaller net force or not.

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