Question

What is kinetic energy? Derive an expression for the at a speed of r?​

Answer 1

Derivation:

Derivation:A 2-kg mass (4.4 pounds on Earth) moving at a speed of one metre per second (slightly more than two miles per hour) has a kinetic energy of one joule. The unit in the centimetre-gram-second system is the erg, 10−7 joule, equivalent to the kinetic energy of a mosquito in flight.

Kenetic energy :

The kinetic energy is proportional to the square of the speed, so doubling the speed increases thekinetic energy by a factor of 4.

Answer 2

Explanation:

kinetic energy is the energy of body caused by its state of motion