Question

A car falls off a ledge and drops to the ground in 2s. Let g=10m/s2

(a) What is its speed on striking the ground?

(b) How high is the ledge from the ground?​

Answer 1

Answer:

a) v=u+at

so, v=20 m/s

b) s=ut + 1/2 at^2

so, s=20 m