a) What is the importance of universal law of gravitation?
b) A car falls off a ledge and drops to the ground in 0.5sec. Let g = 10m/s2,
(i) What is its speed on striking the ground?
(ii) What is its average speed during the 0.5sec?
(iii) How high is the ledge from the ground?
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Answer:
a)Importance of The Universal Law of Gravitation
It binds us to the earth. It is responsible for the motion of the moon around the earth. It is responsible for the motion of planets around the Sun. Gravitational force of moon causes tides in seas on earth.
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sorry dear i don't know the second answer (b).
hope it will help u.
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