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3 years ago

Worth 50 point!!!

Physics

1 answer:

stira [4]3 years ago

4 0

Answer:

fact one

Explanation:

fact two is going slower and a longer distance than fact one so fact one will get there first.

hope this helps

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The sum of Potential Energy and Kinetic Energy is called Mechanical Energy

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A person who weighs 69kg rides with an acceleration of +1.45 m/s2. What is the force exerted by the legs on the person's upper b

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Answer:

The force exerted by the legs on the person's upper body 32.106 N.

Given:

Mass = 69 kg

Acceleration = 1.45 $\frac{m}{s^{2} }$

To find:

Force exerted by legs on the person's upper body = ?

Formula used:

Force = mass × acceleration

Solution:

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Mass of legs = 22.08 kg

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Force = 22.08 × 1.45

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The force exerted by the legs on the person's upper body 32.106 N.

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4 years ago

A 3 kg ball rolls at 2m/s does this system favor kinetic energy or potential energy?

MissTica

Answer:

Kinetic energy

Explanation:

Total energy of any system is always conserved.

$E = K +U$

E= Total energy

K = kinetic energy

U = Potential energy

Kinetic energy is the energy acquired by the system due to the virtue of it's motion.

Potential energy is the energy acquired by the system due to the virtue of it's configuration.

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$K = \frac{1}{2} \times 3 \times 2^{2}$

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3 years ago

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When this treated water is released into the downriver stream, it affects the health of aquatic organisms present in that stream.Use of chemicals in treating the wastewater may cause genetic problems to the communities present in that region.

It also causes air pollution and more energy is needed for the treatment process and thus affects the ecosystem.

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