(a) from x = 0 to x = 2 m 1_________= J (b) from x = 2 m to x = 3 m 2_________=

Question

(a) from x = 0 to x = 2 m
1_________=    J

(b) from x = 2 m to x = 3 m
2_________=    J

(c) from x = 0 to x = 3 m
3 _________=   J

A child applies a force F vector across the following intervals. (a) from x = 0 to x = 2 m 1_________= J (b) from x = 2 m to x = 3 m 2_________= J (c) from x = 0 to x = 3 m 3 _________= J Calculate the work done by the force F vector parallel to the x-axis to a 10.0-kg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the x-component of the force she applies varies with x-coordinate of the sled as shown in the figure below. The vertical step size is 2 N and the horizontal step size is 1 m.

Explanation / Answer

a> 4 N-m

b> 2 N-m but acting in opposite direction

c> 2N-m

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