A man moves on a straight horizontal road with a block of mass $2 k g$ in his hand. If he covers a distance of $40 m$ with an acceleration of $0.5 m / s^{2}$ , find the work done by the man on the block during the motion.

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Solution

Given, Mass of the block $= 2 k g$

Acceleration $= 0.5 m / s^{2}$

Force $= m a = 2 \times 0.5 N = 1 N$

Distance $= 40 m$

Workdone $= F . S = 1 \times 40 J = 40 J$

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A man moves on a straight horizontal road with a block of mass 2 kg in his hand. If he covers a distance of 40 m with an acceleration of 0.5 m/s2, find the work done by the man on the block during the motion.

Given, Mass of the block=2kgAcceleration=0.5m/s2Force=ma=2×0.5N=1NDistance=40mWorkdone=F.S=1×40J=40J

A man moves on a straight horizontal road with a block of mass $2 k g$ in his hand. If he covers a distance of $40 m$ with an acceleration of $0.5 m / s^{2}$ , find the work done by the man on the block during the motion.

Given, Mass of the block $= 2 k g$

Acceleration $= 0.5 m / s^{2}$

Force $= m a = 2 \times 0.5 N = 1 N$

Distance $= 40 m$

Workdone $= F . S = 1 \times 40 J = 40 J$