Question

Solve this:
Q. A stone is dropped from certain height which can reach the ground in 5 s. If the stone is stopped after 3 s of its fall and then allowed to fall again. Find the time taken (in second) by the stone to reach the ground for the remaining distance.

Answer 1

Dear student,

Use the second eqn of motion

H=10*25/2=125 m.

Distance travel in 3s

h=10*9/2=45 m

Time taken to travel remaining 125-45=80 m

T=√(80*2/10)=√16=4 sec

Regards