Question

an object takes 5 s to reach the grond from a height of 5 m on a planet what is value of g on the planet

Answer 1

t=5s
h=5m
f=g=?
u=0m/s

s=ut+0.5a(t)²
5=0+(1/2)·a·25
5-12.5=a
-7.5 m/s²=a

Hence g= -7.5 m/s²