Chemistry, asked by Anonymous, 1 year ago

solve question no.31
1)80J
2)60J
3)20J
4)40J

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Answered by ashish781

1

ans-3

area between 2 to 3 sec =1/2×{4+6}×1=5

displacement=5m

slope(acceleration)=8/4=2

work=f.s=m.a.s=2.2.5=20 jule

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