a car with 4 wheels has the tyres at a pressure of 20N/cm2. Each tyre of 100cm2 in contact with the road. what is the weight of the car.

Answer 1

1 m^2 = 10,000 cm^2

20 * 10,000 = 200,000 N/m^2

400 cm^2 = 400/10,000 = .04 m^2

200,000 * .04 = 2000*4 = 8,000 N
of weight
about 800 kg mass if g = about 10m/s^2, small car :)