What is the equation of kinetic energy
Answers
Answer:
Kinetic energy can’t be negative, although the change in kinetic energy \Delta KΔKdelta, K can be negative. Because mass can’t be negative and the square of speed gives a non-negative number, kinetic energy can’t be negative. Either something is moving and has positive kinetic energy, or it is not moving and has zero kinetic energy. If the final speed is less than the initial speed, then the final kinetic energy is less than the initial kinetic energy and \Delta KΔKdelta, K is negative.
Some people think doubling speed means doubling the energy. The kinetic energy is proportional to the square of the speed, so doubling the speed increases the kinetic energy by a factor of 444. However, doubling the speed does double the momentum, which we will cover in the next unit.
Answer:
k=1/2mv2
Explanation:
it is because kinetic energy is half of mass×velocity square