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Dear Sir/Madam,

I want to make an electric car like as shown in figure below., with a DC motor. assume no inclination, road is plain surface. please explain all calculation with formulas.THANK YOU
following is the basic known parameters:

Total mass of car(including rider and everything) = 250kg
initial velocity of car = 0 (still car stop)
max velocity = 60 km per hour
time to reach max velocity = 1 minute = 60 seconds
radius of tyre = 8 inch


please tell me how could i find the following parameters to find accurate DC motor for my car:

how to calculate force needed by my car?
how to calculate torque needed by my car?
how to calculate speed RPM of a motor needed by my car?
how to calculate power (watt) of motor needed by my car?
how to calculate battery needed by my car to travel 10 km in one charge?
 

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