Question

A block of mass 2 kg sitting on a smooth horizontal plane is subjected to aconstant horizontal force of 4N whilst travelling a distance of 3 m. Find the work doneby the force. Given that the block starts from rest, find the final speed of the block.

Answer 1

Work done = force x distance

From the information given,

force = 4

distance = 3

Thus,

work done = 4 x 3

Work done = 12 J

Recall,

Force = mass x accleration