Recent content by WhyDidItakeIt

  1. W

    Acceleration of rock due to gravity

    A rock is dropped from rest at the top of a cliff 125 cm high. a) At what speed does it strike the ground? b) How long does it take? To find the velocity the equation used is v = u + at I know that (u = 0) as it's from rest and g = 9.81 ms (gravity) But I just need help on...