The kinetic energy is 400kJ
The kinetic energy is
K.E=(1/2)mv2
The mass is m = 2000kg
The velocity is v = 20ms−1
So,K.E=(1/2)x2000x202=400000J=400kJ
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed.
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