Question

7) An object takes 5 s to reach the ground from a height of 5 m on a planet.

What is the value of g on the planet?

a) 0.4 m/s2

b) 0.5
c) 4 m/s2

d) 5 m/s2 ​

Answer 1

Answer:

0.4 m/s²

Explanation:

s=ut + 1/2gt²

at droping u=0

so

H = 1/2 gt²

5=1/2×g×25

5/25=1/2g

1/5×2/1=g

2/5=g= 0.4