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December 18, 2014

December 18, 2014

Posted by **Samantha** on Thursday, June 2, 2011 at 10:57pm.

- Physics -
**Henry**, Friday, June 3, 2011 at 9:12pma. Cf = pi*D = 3.14 * (2*1.2) = 7.54m =

Circumference of front wheel.

Vf=12.5m/s * 6.28rad / 7.54m=10.4rad/s.

= Angular velocity of front wheel.

Vf^2 = Vo^2 + 2ad = 0,

d = -(Vo)^2 / 2a = -(10.4)^2 / -4 = 27.04m = displacement of front wheel.

V = Vo + at = 0,

t = -Vo / a = -10.4 / -2 = 5.2s = time

required to stop.

a=(Vf-Vo)/t = -36.7 / 5.2 = -7.06m/s^2.

d = -(Vo)^2 / 2a = -(36.7)^2/-14.12 =

95.4m = displqcemnt of rear wheel.

Cr = 3.14 * (2*0.34) = 2.14m = circumference of rear wheel.

Vr=12.5m/s * 6.28rad/2.14m = 36.7rad/s

= Angular velocity of rear wheel.

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