Ek = 1/2mv^2 A car with a mass of 1000 kg is traveling at a speed of 20 m/s. What is its kinetic energy?*1 pointA) 1000 JB) 20,000 JC) 100,000JD) 200,000 J
Question
Ek = 1/2mv^2 A car with a mass of 1000 kg is traveling at a speed of 20 m/s. What is its kinetic energy?*1 pointA) 1000 JB) 20,000 JC) 100,000JD) 200,000 J
Solution
To calculate the kinetic energy (Ek) of the car, we can use the formula Ek = 1/2mv^2.
Here, m is the mass of the car and v is its speed.
Given in the problem, m = 1000 kg and v = 20 m/s.
Substituting these values into the formula, we get:
Ek = 1/2 * 1000 kg * (20 m/s)^2 = 1/2 * 1000 kg * 400 m^2/s^2 = 200,000 Joules
So, the kinetic energy of the car is 200,000 J. Therefore, the correct answer is D) 200,000 J.
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