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3 years ago

4) Kinetic energy is directly related to _______

Physics

1 answer:

TEA [102]3 years ago

6 0

Answer:

4) C.mass

5) C. Potential Energy

Explanation:

4) Kinetic energy (KE) of an object is the energy that it possesses due to its motion. If a mass is in motion ,it has a kinetic energy .

By definition

$Kinetic.Energy=\frac{1}{2}*mass*velocity^{2}$

what matters in Kinetic energy is the mass and the velocity only .

there fore the answer is

C.mass

5) Potential energy is the energy stored in an object, due to the object's position or arrangement.

By definition

$Potential.Energy=mass*gravitaional.Acceleration*height$

in potential energy the height matters.higher the height , higher the energy

therefore the answer is

C.Potential Energy

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Answer:

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3 years ago

) A 1000 kg car travelling at 50 m/s slams into a 1500 kg parked truck in an inelastic manner as

solmaris [256]

(a)

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(b)

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(c)

W = delta KE = KEf - KEi = (0 - 240,000) J = -240,000 J

(d)

Fd = delta KE

F = (delta KE) / d = (-240,000 J) / (50 m) = -4800 N

The magnitude of the friction force is 4800 N.

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4 years ago