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Marizza181 [45]
3 years ago
15

A 2kg bowling ball is 2.5 meter off the ground on a post when it falls. Just before it reaches the ground, it is traveling 7m/s.

Assuming that there is no air resistance, which statement is true
Physics
1 answer:
shutvik [7]3 years ago
7 0
<span>The mechanical energy is conserved.

I hope this helps, good luck! :)</span>
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Briefly explain the two postulates of relativity, how they differed from classical physics, and why Einstein was led to propose
Ray Of Light [21]

Explanation:

The two postulates of special theory of relativity

Postulate 1: The law of physics are invariant under any of inertial frame of reference.

Postulate 2: The velocity of light is remains same in each ans every frame of reference and independent of relativity.

They are differ from classical mechanics that in classical mechanics there is no change in mass and length in relative velocity but in relativistic mechanics it changes.

These two postulates implements in phenomenon like time dilation , length contraction etc.

Thanks

3 0
3 years ago
Can someone write and short summary on how to hula hoop
velikii [3]
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5 0
3 years ago
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Why does the lens need to be thicker for viewing nearby objects?
Maurinko [17]

Answer: To focus on a near object – the lens becomes thicker, this allows the light rays to refract (bend) more strongly. To focus on a distant object – the lens is pulled thin, this allows the light rays to refract slightly.

Explanation:

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3 years ago
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AnnZ [28]

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7.78 * 10³ m/s

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v = √(6.048 * 10^7)

v = 7.78 * 10³ m/s

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