Answer to Question #157421 in Mechanics | Relativity for Arvin Shopon

Question

Hockey, which slides at a speed of 3.5 m/s, is hit in the sliding direction. During the stroke, the racket applies a force of 32 N to the puck for 0.17 seconds. At what speed does the puck move after the stroke? The weight of the disc is 150 g. Use the positive direction marked on the image on the invoice.

Answer 1

Solution:

Impulse: FΔt = mΔv

32N * 0.17s = 0.150kg * Δv → → Δv = 36 $(\frac{m}{s})$

final v = 3.5 $(\frac{m}{s})$ + 36 $(\frac{m}{s})$ = 40 $(\frac{m}{s})$