Physics

Problem

A roller-coaster car starts from rest at a point

20\,\text{m}

above the ground. Neglecting friction, calculate its speed when it reaches a point

5\,\text{m}

above the ground. Take

g = 10\,\text{m/s}^2

. a)

14\,\text{m/s}

20\,\text{m/s}

17\,\text{m/s}

10\,\text{m/s}