A car falls off a ledge and drops to the ground in 0.5 seconds.
Let g = 10 ms-2, then
(a) What is its speed on striking the ground?
(b) What is its average speed during 0.5 second?
(c) how high is the ledge from the ground?
Given,
time taken=0.5 second
g=10 ms-2
As the car is under free fall, the initial speed is zero.
u=0
(a)Under free fall,
u=0
v=u+at
v=0+10×0.5
v=5 ms-1
(b) 
(c)From Newton’s equation of motion,
As u=0,
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