A 1000-kg car requires 10,000 W of power to travel at 15 m/s on a level highway. How much...

A 1000-kg car requires 10,000 W of power to travel at 15 m/s on a level highway. How much extra power in watts is required for the car to climb a 10° hill at the same speed? (Use g = 10 m/s2.)