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Reika [66]
2 years ago
12

How much work does a football player do in the weight room when he squats 150 kg up a distance of 1 meter?

Physics
1 answer:
Zielflug [23.3K]2 years ago
3 0

Answer:

See below

Explanation:

The work done equals the increase in Potential Energy

PE = mgh

    = 150 * 9.81 * 1 = <u>1471.5 j</u>

3 sets of 10 is 30 times this = <u>44145 j</u>

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Answer:

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A quick, easy way to decide whether there was a chemical change

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Answer:

Explanation:

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If v be the velocity of the third part along a direction making angle θ

with x axis ,

x component of v = vcosθ

So momentum along x axis  after explosion of third part   = mv cosθ

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Similarly

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squaring and and then adding the above equation

v² cos²θ +v² sin²θ = 21² +19²

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v = 28.31 m/s

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