A car moves at a steady 22 m/s against a resisting force of 650 N…

Step 1. (a) $650\ \text{N} \times 22\ \text{m/s} = 14\,300\ \text{W} = 14.3\ \text{kW}$.

Step 2. (b) $650\ \text{N} \times 33\ \text{m/s} = 21\,450\ \text{W} = 21.45\ \text{kW}$.

Step 3. (c) The force becomes $650\ \text{N} \times 1.5^2 = 1462.5\ \text{N}$, so $P = 1462.5\ \text{N} \times 33\ \text{m/s} = 48\,300\ \text{W} = 48.3\ \text{kW}$.