Question

a stone is thrown vertically upward with a speed of 20m/s.
find its speed after 1s; after 2s.
how far up does it travel?
how long will it take to get back to the point frooriginally thrown?
m which it was

Answer 1

I believe you use the equations for constant acceleration since the only acceleration here is due to gravity.

Answer 2

You there? @rishajuan

Answer 3

yup

Answer 4

Ok so, You have v initial, vi=20 which is basically v at t=0, v(0). Let us also let the position x at t=0 is 0. Do you get it so far?

Answer 5

no.. it so difficult ..