Professional baseball pitchers can deliver a pitch which can reach the blazing speed of 100 mph (miles per hour). A local team has drafted an up-and-coming left handed pitcher who can consistently throw at 91.50 mph. Assuming the ball has a mass 143.0 g and has this speed just before a batter would make contact,
how much kinetic energy does the ball have?
Kball = _______________ J
How high would the ball need to be dropped from to attain the same energy (neglect air resistance)? (The acceleration due to gravity is 9.81 m/s2.)
hball = ______________ m