Homework Help: Intergated chemistry/physics

Posted by Laura on Wednesday, October 3, 2012 at 10:59am.

A car is accelerated at a rate of 2.5 meters/second^2. If the starting speed is 5.0 meters/second, how many seconds will it take the car to reach a final speed of 27.0 meters/second?

Intergated chemistry/physics - Steve, Wednesday, October 3, 2012 at 11:34am
(27-5)/2.5 = 8.8
Intergated chemistry/physics - GeorgeK, Wednesday, October 3, 2012 at 11:05pm
V(final) = V(initial) + accel x time
Vf = Vi + at
Solving for t,
t = (Vf-Vi)/a
t = (27.0m/s-5.0m/s) / 2.5m/s^2 = 8.8 seconds

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