In a shuffleboard game, the puck slides a total of 12 m before coming to rest. If the coefficient of kinetic friction between the puck and the horizontal board is 0.28, what was the initial speed of the puck?
A) 8.1 m/s
B) 29.0 m/s
C) 6.5 m/s
D) 7.3 m/s

Question

Quizplus · Accepted Answer

The correct answer is A because the initial speed of the puck can be calculated using the equation v^2 = u^2 + 2as, where v is the final velocity (0 m/s), u is the initial velocity, a is the acceleration due to friction (-0.28 * 9.8 m/s^2), and s is the distance traveled (12 m). Solving for u gives u = 8.1 m/s.

In a Shuffleboard Game, the Puck Slides a Total of 12