PHYSICS HIGH SCHOOL

A stone thrown from a height of 5.72 meters hits the ground at 13.3, Calculate the initial speed. Neglect air resistance

Answers

Answer 1

Answer:

Answer:

12.31618 m/s

Explanation:

s = Displacement

t = Time taken

g = Acceleration due to gravity = 9.81 m/s² = a

$s=ut+(1)/(2)at^2\n\Rightarrow 5.72=0t+(1)/(2)* 9.81* t^2\n\Rightarrow t=\sqrt{(5.72* 2)/(9.81)}\n\Rightarrow t=1.07988\ s$

Velocity is given by

$v=(s)/(t)\n\Rightarrow v=(13.3)/(1.07988)\n\Rightarrow v=12.31618\ m/s$

The initial velocity is 12.31618 m/s

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Answers

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Answers

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The mass of the moon is 7.36×1022kg and its distance to the Earth is 3.84×108m. What is the gravitational force of the moon on the earth?

Answers

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Answers

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