A force F ? is applied to a 2.0-kg radio-controlled model car parallel to the x
ID: 1282925 • Letter: A
Question
A force F? is applied to a 2.0-kg radio-controlled model car parallel to the x-axis as it moves along a straight track. The x-component of the force varies with the x-coordinate of the car as shown in the figure (Figure 1) .
Part A
Calculate the work done by the force F? when the car moves from x=0 to x=3.0m.
Express your answer using two significant figures.
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Part B
Calculate the work done by the force F? when the car moves from x=3.0m to x=4.0m.
Express your answer using two significant figures.
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Part C
Calculate the work done by the force F? when the car moves from x=4.0m to x=7.0m.
Express your answer using two significant figures.
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Part D
Calculate the work done by the force F? when the car moves from x=0 to x=7.0m.
Express your answer using two significant figures.
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Part E
Calculate the work done by the force F? when the car moves from x=7.0m to x=2.0m.
Express your answer using two significant figures.
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Figure 1 of 1
A force F? is applied to a 2.0-kg radio-controlled model car parallel to the x-axis as it moves along a straight track. The x-component of the force varies with the x-coordinate of the car as shown in the figure (Figure 1) .
Part A
Calculate the work done by the force F? when the car moves from x=0 to x=3.0m.
Express your answer using two significant figures.
W = JSubmitMy AnswersGive Up
Part B
Calculate the work done by the force F? when the car moves from x=3.0m to x=4.0m.
Express your answer using two significant figures.
W = JSubmitMy AnswersGive Up
Part C
Calculate the work done by the force F? when the car moves from x=4.0m to x=7.0m.
Express your answer using two significant figures.
W = JSubmitMy AnswersGive Up
Part D
Calculate the work done by the force F? when the car moves from x=0 to x=7.0m.
Express your answer using two significant figures.
W = JSubmitMy AnswersGive Up
Part E
Calculate the work done by the force F? when the car moves from x=7.0m to x=2.0m.
Express your answer using two significant figures.
W = JSubmitMy AnswersGive Up
Provide FeedbackContinue
Figure 1 of 1
A force F? is applied to a 2.0-kg radio-controlled model car parallel to the x-axis as it moves along a straight track. The x-component of the force varies with the x-coordinate of the car as shown in the figure (Figure 1) . Part A Calculate the work done by the force F? when the car moves from x=0 to x=3.0m. Express your answer using two significant figures. W = J SubmitMy AnswersGive Up Part B Calculate the work done by the force F? when the car moves from x=3.0m to x=4.0m. Express your answer using two significant figures. W = J SubmitMy AnswersGive Up Part C Calculate the work done by the force F? when the car moves from x=4.0m to x=7.0m. Express your answer using two significant figures. W = J SubmitMy AnswersGive Up Part D Calculate the work done by the force F? when the car moves from x=0 to x=7.0m. Express your answer using two significant figures. W = J SubmitMy AnswersGive Up Part E Calculate the work done by the force F? when the car moves from x=7.0m to x=2.0m. Express your answer using two significant figures. W = J SubmitMy AnswersGive Up Provide FeedbackContinueExplanation / Answer
answers
a) Work done from 0 to 3 = area under the F v/s x curve from (0 to 3)
= 1/2*2*2 + 1*2 = 2 + 2 = 4 units
b) Work done from 3 to 4 = area under the F v/s x curve from (3 to 4)
= 0 units
c) Work done from 4 to 7 = area under the F v/s x curve from (4 to 7)
= -1/2*2*1 = -1 units
d) Work done from 0 to 7 = area under the F v/s x curve from (0 to 7)
1/2*2*2 + 1*2 -1/2*2*1 = 4 -1 = 3 units
e) Work done from 7 to 2 = area under the F v/s x curve from (7 to 2)
1*2 -1/2*2*1 = -2 + 1 = -1 units
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