An object has a mass of 20 kg and is placed 2 m above the ground. What is its gravitational potential energy? (PEg)
1 answer:
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answer is 46 m/s
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Answer:
12 m
Explanation:
The object is in uniformly accelerated motion, so the distance covered can be found using the following suvat equation:
where
s is the distance
u is the initial velocity
t is the time
a is the acceleration
For this problem,
and
u = 0, since we are considering the first second of motion
So, substituting t = 1 s, we find