posted by cylinder .
The drag force acting on a car travelling at a speed v is given by the equation F=kAv^2
Where A is the area of the front of the car.
Show that a suitable unit for the quantity k is kgm-3.
Mark scheme answer:
Which is K=kgm-3
I am confused could someone show the working out clearly involving all steps and equations used.
As physics -
F = mass * acceleration
kg m/s^2 or Newtons = Force units
kg m/s^2 = kunits * m^2 *m^2/s^2
k units = kg /m^3