Question

A stone is thrown vertically from the top of the tower with an initial velocity of 10ms . It strikes the stone at the ground after 2 second. The velocity of the stone at the time of its strike is :

Answer 1

Answer:

2.8m/s^2

Explanation:

s=ut+1/2at^2 sa find karo s=?(g=9.8). V=√2gs. we get final velocity

Answer 2

Answer:30m/s

Explanation:

v=u+gt

=10+(10×2)

=10+20

=30m/s