A small child with mass 5kg is launched by a spring with a constant of 150N/m at a 45-degree angle from the ground a distance d = 50m away from a pond of hideous hand puppets posing as crocodiles.
How far does the spring need to be compressed to ensure that the child lands safely in the pond?

From this figure, determine:

a) The minimum coefficient of static friction between the polar bears' paws and the icy surface of the glacier in order to prevent the them from sliding.

b) How the hell did this happen?