A car requires 75 horsepower (hp) to maintain a constant velocity of 27.3 m/s on a flat road, which translates to a resistive force of 2.05 x 103 N. The conversion factor of 1 hp equals 746 watts is essential for calculating the total resistive force. The relationship between work, force, and distance is crucial in determining how much energy the car expends against resistive forces such as friction and air resistance.
PREREQUISITESStudents studying physics, automotive engineers, and anyone interested in understanding vehicle dynamics and resistive forces affecting cars.
In one second how much energy does the car use? So how much work does the car do against the resisitive force in that second? Over what distance is that work done in that second? What is the relationship between Work, Force and distance?physicsgurl12 said:Homework Statement
A car needs to generate 75 hp in order to maintain a constant velocity of 27.3m/s on a flat road. What is the magnitude of the total resistive force acting on the car. (due to friction,air resistance etc.)Homework Equations
1hp=746 watts
The Attempt at a Solution
the answer is 2.05*10^3N but idk how to get it.