A ball is thrown vertically upwards with a velocity of 30 m/s. If the acceleration due to gravity is 10 m/s 2 , what will be the distance travelled by it in the last second of motion before again come to his hand:
Text Solution
Verified by ExpertsThe correct answer is:
C
Time of flight = 
= 6 sec
S n = u – 
g (2n – 1) = 30 – 
× 10 (2 × 6 – 1) = 30 – 55 = – 25m
(25m downwards)
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