Two identical 670N twins, riding identical waxed wood sleds, race down a tall hill and reach a top speed of 9 m/s. At the bottom of the hill is a snowy level plain.
A) What is the weight of each twin?
B) What is the kinetic energy of each twin at the top speed?
C) If the twins are initially at rest, how far do they travel down the hill before reaching the top speed?
D) What is the total kinetic energy of both twins at the top speed?
