Question

a sleigh and its rider are moving at a speed of 4.0m/s along a horizontal stretch of snow. the snow exerts a kinetic frictional force on the runners of the sleigh so the sleigh eventually slows down and stops. the coefficient of kinetic friction is 0.050. find the displacement of the sleigh

Answer 1

Answer:

As the sled slows down, its velocity is decreasing. As our discussions in Chapters 2 and 3 indicate, the changing velocity is described by an acceleration (which in this case is a deceleration since the sled is slowing down). Assuming that the acceleration is constant, we can use one of the equations of kinematics from Chapter 3 to relate the displacement to the initial and final velocities and to the acceleration. The acceleration of the sled is not given directly. However, we can determine it by using Newton's second law of motion, which relates the acceleration to the net force (which is the kinetic frictional force in this case) acting on the sled and to the mass of the sled (plus rider).

Explanation: