(for
simplifying the calculation).
(a) What is its speed on
striking theground?
(b) How high is the ledge from
theground?
(c) What is its average speed
during the 1 s?
Answer:
(a) Here initial velocity of
car, u = 0,
time of fall, 
and acceleration for car, a =
acceleration due to gravity 
Final speed
of car when striking the ground
(1)
(b) Height of the ledge = total distance
covered by car
(1)
(c) Average speed
Or
Average Speed
(1)
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