Question

4. Define kinetic energy. Give one ex
example.
State the factors on which the kinetic energy
of a body depends.​

Answer 1

Answer:

▪︎Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles. Any object in motion is using kinetic energy(example): a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field are all examples of kinetic energy at work.

Because kinetic energy is proportional to the velocity squared, increases in velocity will have an exponentially greater effect on translational kinetic energy. Doubling the mass of an object will only double its kinetic energy, but doubling the velocity of the object will quadruple its velocity.

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Answer 2

Explanation:

A force must be applied on a body to accelerate an object. Work must be done in order to apply a force. The body will move with an unvarying speed after the work has been done due to the energy provided by it. The speed and the mass of the body are factors on which the energy transfer that makes up the kinetic energy depends.

Examples of Kinetic Energy

1. 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.
2. A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass.
3. The kinetic energy of an asteroid falling towards earth is very large.
4. The kinetic energy of the aeroplane is more during the flight due to large mass and speedy velocity.

the kinetic energy

of a body depends.

The amount of translational kinetic energy (from here on, the phrase kinetic energy will refer to translational kinetic energy) that an object has depends upon two variables: the mass (m) of the object and the speed (v) of the object. The following equation is used to represent the kinetic energy (KE) of an object.