Question

A 95 kg halfback makes a turn on the football field. The halfback sweeps out a path that is a portion of a circle with a radius og 12 meters. The halfback makes a quarter of a turn around the circle in 2.1 seconds. Determine the speed, acceleration and net force acting upon the halfback

Answer 1

v = (2 pi R/4) / 2.1 = pi R/(4.2)

Ac = v^2/R

F = mAc = m v^2/R

Answer 2

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