*(13) 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?
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1
Answer:
Δ=μt+
2
1
gt
2
; μ=0
t
2
2Δ
=g
⇒g=
5×5
2×5
=0.4m/sec
2
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