Question

Assume that you throw a stone vertical upward from the ground with an initial velocity of
20m/s. How long does it take the stone to reach its maximum height?

Answer 1

Answer:

2 second

Explanation:

let's assume,

g=10m/s

v=0

u=20m/s

by using the 1st equation of motion

v=u+gt

0=20+(-10)t

-20=-10t

20=10t

20/10=t

2 second=t

t=2seconds