Question

A stone is projected with a velocity of 98 m/s^-1.

Calculate after how much time it will strike the ground.

a) 10s
b) 4.5s
c) 4s
d) 7s ​

Answer 1

so,

u = 98m/s

v = 0 m/s

g = -9.8m/s²

so, t = v-u/a

= 10 s = (a)

so this is the answer.