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3 years ago

A ball with a mass of 15kg sits at rest on

Physics

1 answer:

Paul [167]3 years ago

8 0

Answer:

Explanation:

<u>Formula</u>

Gravitational Potential Energy (GPE) = mgh

<u>Given</u>

m = 15 kg
h = 5 m
g = 9.8 m/s

<u>Solving</u>

GPE = 15 x 5 x 9.8
GPE = 75 x 9.8
GPE = <u>735 J</u>

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Explanation:

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It should be noted that the acceleration of the object directly depend on the net force while it depends inversely on the mass. Therefore, when the force that's acting on such object is increased, then the acceleration will increase as well. On the other hand, when there is an increase in mass, there'll be a reduction in the acceleration.

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3 years ago

A sprinter in a 100-m race accelerates uniformly for the first 71 m and then runs with constant velocity. The sprinter’s time fo

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Answer:

The acceleration of the sprinter is 1.4 m/s²

Explanation:

Hi there!

The equation of position of the sprinter is the following:

x = x0 + v0 · t + 1/2 · a · t²

Where:

x = position of the sprinter at a time t.

x0 = initial position.

v0 = initial velocity.

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4 years ago

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<u>Answer:</u>

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