Speed Slide
Physics – 74.0 kg base runner begins his fall at second base when moving at a speed of 3.5 m / s. ..?
… The friction coefficient in his clothes and the Earth is 0.70. It slides so that its speed is zero just when you reach the base. (A) How much mechanical energy is lost due to friction acting on the runner? Answer J (b) To what point slide? M response thanks!
The mechanical energy loss is equal to the change in kinetic energy = 1 / 2 * m * v ^ 2 = 1.2 * * 74.0kg (3.5 m / s) ^ 2 = 453J b) Work = F * d * mu = where m * F * = g, mu * m * g W x therefore x = W / (mu * g * m) = 453J / (0.70 * 9.8 * 74 kg / s ^ 2) = 0.892m
