In a fire, a person of mass Z kilograms jumps out of a second story window. Calculate (a) the person's weight; (b) the kinetic energy of the person upon reaching the ground if they stand on the windowsill when they jump; (c) the person's kinetic energy upon reaching the ground if they hang by their outstretched arms from the windowsill and then drop down to the ground; and (d) how the person can land 2 meters away from the wall.

Z being 101