Question 169848
Suppose a rock is dropped from a height of 100m on Mars and also on Venus.
On Mars .g=3.7 m/s2 and Venus,g = 8.9m/s2.How long does it take the rock to fall to a Height of 25 m on each Planet
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In both cases, it's the time to fall 75 meters.
{{{s = (at^2)/2}}} (s is the distance)
On Mars:
(((75 = (3.7t^2)/2}}}
{{{3.7*t^2 = 150}}}
{{{t = sqrt(150/3.7)}}}
t = 6.367 seconds
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On Venus:
The only change is gravitational acceleration, so start with:
{{{t = sqrt(150/g)}}}
{{{t = sqrt(150/8.9)}}}
t = 4.105 seconds