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3 years ago

Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s.

Physics

1 answer:

ankoles [38]3 years ago

7 0

Answer:

The correct answer is - 200000 J

Explanation:

We use the formula of kinetic energy:

The formula to calculate kinetic energy is,

Here,

Ec =1/2 x m x v^2

The mass of the roller coaster is, m = 1000 k g

The speed of the roller coaster is, v = 20.0 m/s

Therefore,

Ec=1/2 x 1000kg x (20m/s)^2 = 200.000Joule

200,000J

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A 1500kg car double its speed from 50km/h to 100km/h. By how many times does the kinetic energy from the car's forward motion in

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Answer:

Explanation:

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Answer:

Explanation:

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Now Energy required to orbit around the earth

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$\frac{GM_em}{R_e}-\frac{GM_em}{R_e+h}-\frac{GM_2m}{2(R_e+h)}=0$

$\frac{1}{R_e}-\frac{3}{2(R_e+h)}=0$

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3 years ago

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