The kinetic energy of a 2000 kg car that is travelling at 10 m/s is equal to 10⁵ Joules.
Explanation:
Kinetic energy is the form of energy that is present in a body due to its motion. When work is done on an object of mass m and it gains speed and the energy transferred on it by applying a net force is converted into Kinetic energy.
The unit of Kinetic energy is Joule which is equal to kg m² s⁻².
The mass of the car in the given situation = m = 2000 kg
The car is travelling at a speed v = 10 m/s
Kinetic energy of the moving car is given by half of its mass; m and the square of its velocity.
Formula for K.E is given as:
[tex]K.E = \frac{1}{2}mv^{2}[/tex]
Inserting the given values in the formula given above will give the kinetic energy possessed by the moving car.
[tex]K.E = 0.5*2000*10^{2}\\K.E = 1000*100\\K.E = 100000\\K.E = 1 * 10^{5} J[/tex]
Hence the magnitude of the kinetic energy that the car possesses is equal to 10⁵ Joules.
Keywords: work, joule, kinetic energy
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