Determine the speed of the racecar

A race car starts from rest on a circular track
of radius 220 m. Its speed increases at the
constant rate of 0.4 m/s

. At the point where
the magnitudes of the radial and tangential
accelerations are equal, determine the speed
of the race car.
Answer in units of m/s

radial and tangential accelerations are equal
v^2 / r = 0.4
v^2 = 0.4 * 220
v = 9.38 m/s
answer