physics question need help

Physics
Tutor: None Selected Time limit: 1 Day

A dragster accelerates to a speed of 112 m/s over a distance of 398 m. Determine the acceleration (assume uniform) of the dragster.

Apr 7th, 2015

vi = 0 m/s

vf = 112 m/s

d = 398 m

Find:

a = ??
vf2 = vi2 + 2*a*d

(112 m/s)2 = (0 m/s)2 + 2*(a)*(398 m)

12544 m2/s2 = 0 m2/s2 + (796 m)*a

12544 m2/s2 = (796 m)*a

(12544 m2/s2)/(796 m) = a

a = 15.8 m/s2


Apr 7th, 2015

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