Question

Atrain travelling on a circular track of radius ofcurvature of90 m got a centripetal acceleration of2.5m/s2
What was its velocity a)30m/s
b)15m/s
c)40m/s
d)45m/s​

Answer 1

v² / r = 2.5 m s^(-2)

v² / 90 = 2.5 m s^(-2)

v² = 2.5 × 90 m² s^(-2)

v² = 225 m² s^(-2)

v = 15 m s^(-1)