An athlete of mass is running such that his kinetic energy is .

PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

An athlete of mass

60\,\text{kg}

is running such that his kinetic energy is

7.2\,\text{kJ}

. (a) Calculate his speed. (b) If he increases his speed by

20\%

, determine his new kinetic energy, expressing the answer in joule.