A stone is projected vertically downward with a velocity of from the edge of a cliff
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A stone is projected vertically downward with a velocity of 5m/s from the edge of a cliff. After 4s its speed becomes 45m/s. Take the downward direction as positive.
(i) Calculate the numerical value of the acceleration acting on the stone.
(ii) Determine the displacement of the stone in the first 4s of its motion.
(iii) Find its velocity after 6s from the instant it was projected.