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April 25, 2014

April 25, 2014

Posted by **Bethany** on Sunday, August 28, 2011 at 9:12pm.

How long after the trooper starts the chase does he overtake the speeding car? (answer in units of s)

- Physics -
**Henry**, Tuesday, August 30, 2011 at 4:35pmd1 = Vo*(t+1) + 0.5at^2,

d1 = 33(t+1) + 0.5*0*(t+1)^2,

d1 = 33(t+1) + 0 = 33t + 33.

d2 = 0 + 0.5*2.62*t^2,

d2 = 1.31t^2.

d1 = d2,

33t + 33 = 1.31t^2,

1.31t^2 - 33t - 33 = 0,

Solve using Quadratic Formula and get:

t = 26.15s, and -0.96s.

Use the positive valuie:

t = 26.15s.

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