Ask Question
21 June, 22:02

When an automobile moves with constant velocity, the power developed in a certain engine is 76.8 hp. What total frictional force acts on the car at 51.7 mi/h?

+4
Answers (1)
  1. 21 June, 22:45
    0
    2,480.2 N

    Explanation:

    power output = 76.8 hp = 76.8 x 746 (to convert from hp to Watts) = 57292.8 W

    velocity = 51.7 mph = 51.7 x 0.44704 (to convert to m/s) = 23.1 m/s

    find the frictional force acting on the car

    power output = frictional force x velocity

    frictional force = power output / velocity

    frictional force = 57,292.8 / 23.1 = 2,480.2 N
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “When an automobile moves with constant velocity, the power developed in a certain engine is 76.8 hp. What total frictional force acts on ...” in 📙 Physics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers