7. An object of mass 2 kg is moving with velocity 4 m/s. How much work should be done on the object in order to bring the object to rest?
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2 mm/mili second. mrk me brainliest
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Answer:
P = mv
Pi = 2 × 4 = 8 kg m/s²
Pf = 2 × 0 = 0 kg m/s²
F = Change in momentum = 8 N
It's positive because we need same force to be applied from opposite direction.
Therefore, W = F m cosØ = 8 × 2 = 16 J
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