Answer:
The kinetic energy is 200.000 Joule (200KJoule)
Explanation:
We use the formula of kinetic energy:
Ec =1/2 x m x v^2
Ec=1/2 x 1000kg x (20m/s)^2 = 200.000Joule
200.000J/1000KJ/J=200 kJoule
The kinetic energy of the roller coaster at the given mass and speed is 200,000 J.
The given parameters;
The kinetic energy of the roller coaster is determined by taking the average of the product of the mass and the square of the speed of the roller coaster as shown below;
K.E = ¹/₂mv²
K.E = ¹/₂ x 1000 x 20²
K.E = 200,000 J
Thus, the kinetic energy of the roller coaster at the given mass and speed is 200,000 J.
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