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kherson [118]
3 years ago
6

A ball is falling after rolling off a tall roof. The ball has

Physics
2 answers:
Rom4ik [11]3 years ago
8 0
C.
Because it’s falling it has acceleration in the y direction. If you have acceleration, you usually also have velocity, and since kinetic energy is KE= Mv^2 you know you have it. It also has potential energy because it has some height to it, and PE= Mgh.
Stella [2.4K]3 years ago
8 0

The ball has both kinetic and potential energy.

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Explanation:

Given that,

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We need to find the time period of oscillation observed by the observed. The time period of oscillation is given by :

t_o=2\pi \sqrt{\dfrac{m}{k}} \\\\t_o=2\pi \sqrt{\dfrac{7.11}{61.6}} \\\\t_o=2.13\ s

Time period of oscillation measured by the observer is :

t=\dfrac{t_o}{\sqrt{1-\dfrac{v^2}{c^2}} }\\\\t=\dfrac{2.13}{\sqrt{1-\dfrac{(2.79\times 10^8)^2}{(3\times 10^8)^2}} }\\\\t=5.79\ s

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3 0
3 years ago
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will..
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3 years ago
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Confirmation bias can affect our problem-solving abilities. <br> A. True <br> B. False
marusya05 [52]

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3 years ago
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Colt1911 [192]

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3 years ago
A Scooter travelling at 10m/s speed up to 20m/s in 4 sec.find the acceleration of scooter​
stira [4]

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2.5 m/s²

Explanation:

Given,

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The acceleration of the scooter is 2.5 m/s²

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