Question

a An object takes 5 s to reach the grond
from a height of 5 m on a planet.
What is the value of g on the planet?
​

Answer 1

Answer:

0.4m/s^2

Explanation:

a=g (acceleration due to gravity)

s=h(distance)

t=time

Answer 2

The value g on the planet is 0.4m/s².

Explanation:

Given :

Time - 5 seconds.

Height - 5m.

To Find :

The value of g.

Solution :

This kind of question get solved by using kinematics equations.

We know that :

$\bigstar\;\boxed{\bf S = ut + \dfrac{1}{2}\;gt^2}$

In this equation :

• S = height
• u = initial velocity
• t = time in sec
• g = gravitational acceleration

So,

⇒ S = ut + 1/2gt²

⇒ 5 = 0 × 5 + 1/2 × g × 5²

⇒ 5 = 12.5g

⇒ g = 5/12.5

⇒ g = 0.4 m/s²

Therefore, value of g on the planet is 0.4m/s²