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A 50.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at...

A 50.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 5.00 ms, what is the magnitude of the average acceleration of the ball during this time interval?
________ m/s2

A certain car is capable of accelerating at a rate of 0.63 m/s2. How long does it take for this car to go from a speed of 45 mi/h to a speed of 49 mi/h?
________ s

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