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Asked: 2022-11-10T08:06:37+05:30 In:

A body of mass `2 kg` is projected with an initial velocity of `5 ms^(-1)` along a rough horizontal table. The work done on the body by the frictional forces before it is brought to rest is
A. 250 J
B. 25 J
C. `-250 J`
D. `-25 J`

A body of mass `2 kg` is projected with an initial velocity of `5 ms^(-1)` along a rough horizontal table. The work done on the body by the frictional forces before it is brought to rest is
A. 250 J
B. 25 J
C. `-250 J`
D. `-25 J`
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1 Answer

  1. Correct Answer – D
    `W_(f) = ((1)/(2) mv_(f)^(2) – (1)/(2) m v_(i)^(2))`.

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