3. A car must do work at a rate of 10 kW to maintain a constant speed of 25 m/s on flat ground. How large are the forces opposing the motion? 4. Work was calculated using the vertical displacement. Was your actual distance traveled the same as your vertical displacement? Explain your answer. 5. If you tried to lift the object but couldn't, was any work done? Explain your answer. 6. If 1 horsepower = 550 ft.*lbs./s or 746 Watts. What is your power in horsepower? (How much of a horse are you?)