A) \[-0.2\text{ }J\]
B) \[+0.2\text{ }J\]
C) cannot be calculated because the coefficient of friction is not given
D) cannot be calculated because the distance moved is not given
Correct Answer: A
Solution :
: Work done by body = force\[\times \]distance in force direction = (mass of body\[\times \]acceleration)\[\times \]distance = mass\[\times \]increase in velocity \[=\left( \frac{100}{1000} \right)\times \left( \frac{-200}{100} \right)J=-0.2J\]You need to login to perform this action.
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