A race car is moving with a velocity of 144 kilometers/hour. The driver applies the brakes, and the car comes to a halt in 12.0 seconds. What is the average acceleration of the car during those 12.0 seconds?

Question

ericcrawford · Answer

A.

–12.0 meters/second2

B.

–3.3 meters/second2

C.

3.3 meters/second2

D.

10.3 meters/second2

Narad · Answer

The initial velocity is \ The final velocity is $$v=0m/s$$ The time to come to a halt is $$t=12 s$$ Apply the equation of motion $$v=u+at$$ and solve for the acceleration a

ericcrawford · Answer

thanks

Narad · Answer

you are welcome