Question

Please explain step-by-step
Take initial velocity as 0​

Answer 1

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Time taken, t = 5 seconds

Displacement, s = 5 metres

Initial velocity, u = 0 metres/second

Let the acceleration be a m/s2 .

$\implies{\rm }$When the acceleration is constant, initial velocity, acceleration, time taken and displacement are related by a simple formula:

s=ut+(1/2)at2

Therefore,

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

a×(25/2)=5

a=5/(25/2)

a=10/25

a=2/5

a=0.4

$\dashrightarrow$Therefore, the acceleration is 0.4m/s2 .

$\dashrightarrow$This is the acceleration due to gravity on that planet.

$\dashrightarrow$Please note that you can't call ‘acceleration due to gravity’ as ‘gravity’.

$\implies{\rm }$Gravity refers to gravitational force. Gravitational force (gravity) due to the planet on any mass ‘m’ (expressed in kilograms) = (0.4×m) newtons.

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