tell me what is kinetic energy
Answers
Answer:
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
To accelerate an object we have to apply force. To apply force, we need to do work. When work is done on an object, energy is transferred and the object moves with a new constant speed. The energy that is transferred is known as kinetic energy and it depends on the mass and speed achieved.
The definition of kinetic energy in Physics
“Kinetic energy of an object is the measure of the work an object can do by the virtue of its motion.”
Kinetic energy is a scalar quantity. Kinetic energy is completely described by magnitude alone.
Examples of Kinetic Energy
A semi-truck travelling down the road has more kinetic energy than a car travelling at the same speed because the truck’s mass is much more than the car’s.
A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass.