# Average Power Delivered by a Car Engine - Example Problem

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A 1400 kg Prius uniformly accelerates from rest to 30 km/hr in 9.25 seconds and 42 meters. If an average force of drag of 8.0 N acts on the car, what is the average power developed by the engine in horsepower? Want Lecture Notes? This is an AP Physics 1 Topic.

Content Times:

0:15 Translating the example to physics

2:13 The equation for power

3:37 Drawing the Free Body Diagram and summing the forces

4:47 Solving for acceleration and Force Applied

5:43 Determining theta

6:01 Solving for Average Power

6:53 Understanding our answer

7:34 The Horse Pedal

9:13 Comparing to a larger acceleration example

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