Question

A body falls freely from a height 'h'. After two seconds if accelaration due to gravity is reversed the
body

a) continues to fall down
b) falls down with retardation and goes up again with acceleration
c) falls down with uniform velocity
d) raises up with acceleration​

Answer 1

A body falls freely from a height 'h' after two seconds if acceleration due to gravity is reversed the body. A car moving with a speed of 40km/h can be stopped by applying the brakes after at least 2 m.

Answer 2

Answer:

The correct option is option b) falls down with retardation and goes up again with acceleration

Explanation:

When a body falls freely form a height 'h' and after 2 seconds if acceleration due to gravity is reversed then the body will fall down with retardation and then it will go up again with acceleration

the main reason behind this is basically the displacement S will be 1/2gt²

and final velocity v = 2g .

Therefore ,the body will fall down with retardation and then again it will go up with some acceleration

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