an object takes 5s to reach the ground from height of 10m on A planet what is a value of g on the planet?
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Answer:
In this question we will use kinematics equation.
Since we have the height and time we will use the following kinematics equation.
S = ut + 1/2gt²
Where :
S = height
u = initial velocity.
t = time in seconds
g = gravitational acceleration
In our case the initial velocity = 0
Doing the substitution we have :
5 = 0 × 5 + 1/2 × g × 5²
5 = 12.5g
g = 10/12.5
g = 0.8
The g on the planet is therefore 0.8m/s²
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g=25m/s2=0.4m/s2 (on the planet).
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