Question

An object take 5 sec to reach the ground from the height of 5 m on the planet what is value of g on planet

Answer 1

Answer:

Time taken, t = 5 seconds

Displacement, s = 5 metres

Initial velocity, u = 0 metres/second

Let the acceleration be a m/s2m/s2.

When the acceleration is constant, initial velocity, acceleration, time taken and displacement are related by a simple formula:

s=ut+(1/2)at2s=ut+(1/2)at2

Therefore,

5=(0)(5)+(1/2)(a)(52)5=(0)(5)+(1/2)(a)(52)

a×(25/2)=5a×(25/2)=5

a=5/(25/2)a=5/(25/2)

a=10/25a=10/25

a=2/5

a=0•4