Physics Question (1 Viewer)

axwe7

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An astronaut on the moon drops a golf ball to determine the acceleration due to gravity. The time taken to fall through 1.2 m is 1.2 s. Determine the acceleration due to gravity on the moon.

I know that a = (v-u)/t

However the numerator states values based on velocity. Hence we should first use - V = s/t

s = 1.2
t = 1.2

Therefore Velocity = 1 ms-1, initial velocity @ astronaut = 0ms-1.

Therefore,
a = (1-0)/1.2
= 0.8333...

It's incorrect...

The answer is 1.6ms-1.

What am I doing wrong and what is method should be used to answer this question?

Regards,
Axwe7.
 
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Nailgun

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Where did your explanations go ahaha?
 

axwe7

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Yeah, just an algebraic rearrangement. It made no difference here though as u was just 0, as Nailgun noted.
Thanks by the way :D

You always seem to help, not matter what.
 

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