Determine the kinetic energy of a 600-kg roller coaster car that is moving at a speed of 18 m/s.

97200 J

Explanation:

Applying,

K.E = mv²/2 Equation 1

Where K.E = Kinetic Energy, m = mass of the roller coaster car, v = velociety of the roller coaster car.

From the question,

Given: m = 600 kg, v = 18 m/s

Substitute these values into equation 1

K.E = (600×18²)/2

K.E = 97200 J.

Hence the kinetic energy of the car is 97200 J

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we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).