Force Times Distance IAt the local hockey rink, a puck

QUESTION:

Force Times Distance IAt the local hockey rink, a puck with a mass of 0.12 kg is given an initial speed of v = 5.3 m/s. (a) If the coefcient of kinetic friction between the ice and the puck is 0.11, what distance d does the puck slide before coming to rest? (b)If the mass of the puck is doubled, does the frictional force Fexerted on the puck increase, decrease, or stay the same? Explain. (c) Does the stopping distance of the puck increase, decrease, or stay the same when its mass is doubled? Explain. (d)For the situation considered in part (a), show that Fd = 1 2mv2.(The signicance of this result will be discussed in Chapter 7, where we will see that is the kinetic energy of an object.)