Question

A particle P is held at rest at a fixed point and then released. P falls under gravity until it reaches the point A which is 1.25 m below O. Find the speed of P at A and the time taken for P to reach A

Answer 1

Answer:

U=0

S=1.25m

We know

S=Ut+1/2at^2

1.25=0+1/2gt^2

t=0.5secs

Speed at A=V

V=U+at

V=0+g0.5

V=5 m/sec (if g=10m/sec^2)

Explanation: