2. A sled has an initial velocity after coming off the edge of a small hill. Once the sled hits the bottom of the hill, it starts to slow down until it comes to rest. If the initial speed of the sled was 12 m/s and the coefficient of kinetic
friction between the snow and the sled is 0.05, what is the acceleration of the sled as it comes to a stop?

3. 3. A box slides down a 30 degree ramp with an acceleration of 1.20 m/s2
. Determine the coefficient of kinetic friction between the box and the ramp.