Answer:
this is a law because it is a constant fact of nature
Explanation:
Answer:
D
Explanation:
The decrease in potential energy is equal to the increase in kinetic energy.
mgh
250 x 9.8 x 30
=73, 500
21. light changes its direction when travelling through a new medium because denser mediums have a higher angle of refraction.
Answer: maximum height= 40.8m
Explanation: shown in the attachment.
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