Question

A 850-kg car moving at 12 m/s takes a turn around a circle with a radius of 22.0 m. Determine the acceleration and the net force acting upon the car.

Answer 1

$m = 850\textsf{ kg}\\ v = 12\textsf{ m/s}\\ r = 22.0 \textsf{ m}\\ a =\ ?\\ F = \ ?$

$a =\dfrac{v²}r = \dfrac{12^2}{22} = 6.55\textsf{ m/s²}$

$F = \dfrac{mv^2}r = 850 × 6.55 = 5563.64\textsf{ N}$