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Deriving the centripetal acceleration formula. A body that moves in a circular motion (of radius r) at constant speed (v) is always being accelerated. The acceleration is at right angles to the direction of motion (towards the center of the circle) and of magnitude v2 / r. The direction of acceleration is deduced by symmetry arguments.
Acceleration is the rate of change of velocity. So simply subtract the final velocity from the initial velocity and divide it by time taken and you'll get the acceleration. so in this case Acceleration = (0 km/h -153 km/h) / 2sec = -153km/h / 2sec Now you need to convert km/h into meters/sec ie.1 km/h = 0.2777...o simply subtract the final velocity from the initial velocity and divide it by time taken and you'll get the acceleration. so in this case Acceleration = (0 km/h -153 km/h) / 2sec = -153km/h / 2sec Now you need to convert km/h into meters/sec ie.