A hockey stick applies a constant force over a distance of 0.124 m to an initial

Question

A hockey stick applies a constant force over a distance of 0.124 m to an initially stationary puck, of mass 152 g. The puck moves with a speed of 51.0 m/s. With what force did the hockey stick strike the puck? A hockey stick applies a constant force over a distance of 0.124 m to an initially stationary puck, of mass 152 g. The puck moves with a speed of 51.0 m/s. With what force did the hockey stick strike the puck? A hockey stick applies a constant force over a distance of 0.124 m to an initially stationary puck, of mass 152 g. The puck moves with a speed of 51.0 m/s. With what force did the hockey stick strike the puck?

Explanation / Answer

d = distance = 0.124 m

Vo = initial velocity of puck = 0 m/s

m = mass = 0.152 kg

F = constant force

Vf = final velocity = 51 m/s

Using work - kinetic energy theorem

F d = (0.5) m (Vf2 - Vo2)

F (0.124) = (0.5) (0.152) (512 - 02)

F = 1594.2 N

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