Question

NECESITO AYUDA URGENTE SI ALGUIEN ES TAN AMALE
1. A pole vaulter of 65 kg reaches a velocity of 8 m/s. If the pole allows to transform all the kinetic energy into potential energy:
a) How high can it rise?
b) Which is the energy at the moment he falls onto the mat?
c) What is the velocity when he falls onto the mat?
2. A 247g ball is dropped from a window located 15 m high. Calculate the kinetic energy at its initial point.
3. A 10 kg object drops from a high of 20 m. Calculate:
a) The potential energy when it is 10 m high.
b) Its velocity at that instant moment.
c) The velocity when it reaches the ground

Answer 1

Es física eso, no biología!!