A rock with weight of 388 n is on a cliff 1800 m high above head.l bull with a mass of 450 kg is running toward you at a speed up 5.2m/s which is more dangerous (term of energy ) defend your answer
Ke of rock = m g h = 388 * 1800 = 698,400 Joules
Ke of bull = (1/2)m v^2 = .5*450 *5.2^2 = 6084 Joules
You would rather get hit by the bull. However 1800 meters is awfully high. The rock might achieve terminal velocity in such a long fall.