1. Suppose a 1-kg ball is dropped from the top of a hill and reached the ground after 2 seconds. Solve the following:
a. height of the hill in 1 s.
b. velocity of the ball in 1 s.
c. potential energy and kinetic energy in 1 s.
d. Total Mechanical Energy in 1 s.
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Answer:
a. height of the hill in 1s = 4.9m
b. velocity of the ball in 1s = 9.8m/s
c. potential energy and kinetic energy in 1s
Potential energy = 144.06 J
Kinetic energy = 48.02 J
d. total mechanical energy in 1s = 192.08 J
Explanation:
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