A penguin weighing 60.0N is pulled horizontally across the snow so that the coefficient of kinetic friction between the sled and snow is 0. A penguin...

A penguin weighing 60.0N is pulled horizontally across the snow so that the coefficient of kinetic friction between the sled and snow is 0.100. A penguin weighing 70.0N rides on the sled. If the coefficient of static friction between penguin and sled is 0.700, find the max acceleration and maximum horizontal force that can be exerted on the sled before the penguin begins to slide off.