Ababy and stroller have a total mass of 20. kilograms. a force of 36 newtons keeps the stroller moving in a circular path with a radius of 5.0 meters. calculate the speed at which the stroller moves around the curve. [show all work, including the equation and substitution with units.]

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.