When the kinetic energy of a body changes with time, what does this change represent? (A)The work done by some force. (C)The work done by some average force. (B)The work done by a net force. (D)The work done by an irregular force.

When the kinetic energy of a body changes with time, what does this change represent? (A)The work done by some force. (C)The work done by some average force. (B)The work done by a net force. (D)The work done by an irregular force.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 51P: (a) Sketch a graph of the potential energy function U(x)=kx2/2+Aex2 where k , A, and are constants....

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Question

Question number 18

A)0. 58
(B)0.43
(C)0.34
(D)0.16
18) When the kinetic energy of a body changes with time, what does this change represent?
(A)The work done by some force.
(C)The work done by some average force.
(B)The work done by a net force.
(D)The work done by an irregular force.
19) A mass m has a velocity v at a position x, what will be the work done if the distance traveled is
quadrupled?
(A) % my?
(B)my?
(C3/2 my?

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