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) ½ mv (B)mv (C)3/2 mv? (D)2mv 20) Which of the following statements is true about the relationship between the scalar product of tu

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Chapter1: Units, Trigonometry. And Vectors
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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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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) ½ mv
(C)3/2 mv
20) Which of the following statements is true about the relationship between the scalar product of two vectors and
(B)mv?
(D)2mv
the product of the magnitudes of the vectors?
(A) F•ř is larger than Fr.
(B) F•r is smaller than Fr.
(C) F•r could be larger or smaller than Fr, depending on the angle between the vectors.
(D) F•F could be equal to Fr.
By Yishak Paulos
Date of Submission : 26/08/2013E.C
SPARK 4
Transcribed Image Text:N, 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) ½ mv (C)3/2 mv 20) Which of the following statements is true about the relationship between the scalar product of two vectors and (B)mv? (D)2mv the product of the magnitudes of the vectors? (A) F•ř is larger than Fr. (B) F•r is smaller than Fr. (C) F•r could be larger or smaller than Fr, depending on the angle between the vectors. (D) F•F could be equal to Fr. By Yishak Paulos Date of Submission : 26/08/2013E.C SPARK 4
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