A force of 50 dynes is acted on a body of mass 5 g which is at rest for an interval of 3 seconds, then impulse is
Impulse=force×time=50×10−5×3=1.5×10−3N−s
Two point charges 3×10−6C and 8×10−6C repel each other by a force of 6×10−3N. If each of them is given an additional charge −6×106C, the force between them will be
A force produces an acceleration of 5.0 cm/s^2 when it acts on a body of mass 20 g. The force in newton is: