Question

A particle moves m a straight line with retardation proportional to its displacement. Its loss of kinetic energy for any displacement x is proportional to

Options

• x²

• e^x

• x

• log_ex

Answer 1

x² 

Explanation:

According to the formula U = `1/2` kx², a particle's potential energy rises as it goes from a mean position to an extreme position, and correspondingly, kinetic energy falls.