A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. What is the KE of the car?
Question
Solution
The kinetic energy (KE) of an object can be calculated using the formula:
KE = 1/2 * m * v^2
where: m is the mass of the object (in kg) v is the velocity of the object (in m/s)
In this case, the mass (m) of the car is 1120 kg and the velocity (v) is 40 m/s.
Substituting these values into the formula gives:
KE = 1/2 * 1120 kg * (40 m/s)^2
First, square the velocity:
(40 m/s)^2 = 1600 (m^2/s^2)
Then, multiply this by the mass and 1/2:
KE = 1/2 * 1120 kg * 1600 (m^2/s^2) = 896000 Joules
So, the kinetic energy of the car is 896000 Joules.
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