A hockey player shoots the puck which is initially at rest by applying a force of 72 N through a displacement of 1.6 m. The mass of the puck is 161 grams.

Question

a) Calculate the work done by the player on the puck.

b) Calculate the resulting speed of the puck

Answer 1

Work = gain in kinetic energy = F*d = 72*1.6 Joules

so
(1/2) (.161) v^2 = 72 * 1.6

Answer 2

b) Solve Damon's last equation for v.