Physics

Problem

A car requires

50\,\text{kJ}

of work to accelerate from rest to

20\,\text{m/s}

. Ignoring friction, how much additional work is needed to raise its speed from

20\,\text{m/s}

40\,\text{m/s}

? a)

50\,\text{kJ}

100\,\text{kJ}

150\,\text{kJ}

200\,\text{kJ}