(a) To slow down, a drag racer deploys a parachute and applies the brakes. (b) The velocity of the car is decreasing, giving rise to an average acceleration  that points opposite to the velocity. ( Geoff Stunkard)
Figure 2.8  (a) To slow down, a drag racer deploys a parachute and applies the brakes. (b) The velocity of the car is decreasing, giving rise to an average acceleration that points opposite to the velocity. (© Geoff Stunkard)




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