Q1-a stone is thrown upwards into the what is the magnitude and direction of its acceleration ?

Question

Q2-if a ball is thrown horizontally from a top of a cliff and takes 3 seconds to reach the beach below. Calculate the height if the cliff by considering the vertical motion only

Answer 1

Q1. a = g = -9.8 m/s^2 = 9.8 m/s^2 Downward.

Q2. h = 0.5g*t^2 = 4.9*3^2 = 44.1 m.