Question

12. A body dropped from a height takes 2 second to reach the ground. Find the ratio of the
distances covered by the body in the last 1/2 second and the last but one 1/2second.

Answer 1

Answer: 23/60

Explanation:

This is free fall

Time taken by object to reach ground = 2s

So distance covered is 1/2gt^2=1/2(10)(2)^2 = 20 m

So distance covered in 3/2 s is 1/2g(3/2)^2 = 5(9)/4 = 45/4

So distance covered in last 1/2 second=Total distance covered-distance covered in 3/2=20-45/4 = 20-11.25

= 8.75 m

Distance covered in 1/2 s is 1/2g(1/2)^2=5/4=5/4 m

Distance covered in last 3/2 second=Total distance covered-distance covered in 1/2

=20-5/4=20-1.25=18.75

Their ratio is 8.75/18.75=23/60

Answer 2

Answer:

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