If a ball has 300 Joules of potential energy at its highest point, how much kinetic energy will it have at its highest speed? A; less than 300 Joules

B; more than 300 Joules
C: exactly 300 Joules

D; cannot be determined

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?