Q

A constant force acts on a 5 kg object for 2 s, increasing its velocity from 4 m/s to 7 m/s. Find the force.

RRB Group D 28/09/2018 / Shift-III 2018
✓ Answer: C 7.5 N
F = m(v − u)/t = 5(7 − 4)/2 = 7.5 N.
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