Physics

Problem

Consider the following three moving objects. a. (a) Calculate the kinetic energy of each object: (i) a

3\,\text{g}

bullet travelling at

400\,\text{m/s}

, (ii) a

0.5\,\text{kg}

football moving at

20\,\text{m/s}

, (iii) a

75\,\text{kg}

cyclist riding at

5\,\text{m/s}

. b. (b) Arrange the three objects in descending order of kinetic energy.