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A particle moves in one dimension from r...

A particle moves in one dimension from rest under the influence of a force that varies with the distance travelled by the particle as shown in the figure. The kinetic energy (in J) of the particle after it has travelled 3 m is ___________

A

5J

B

4J

C

2.5J

D

6.5J

Text Solution

Verified by Experts

The correct Answer is:
D
`W= k_(f)- K_(i)`
`W= 2 xx 2 +1//2 xx (2+3) xx 1= k_(f)`
`=4+2.5 = 6.5J`
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