**Question1**

A hotel elevator ascends 160 with a utmost speed of 4.9. Its acceleration and deceleration both have a magnitude of 1.5.

How far does an elevator move while accelerating to full speed from rest?

How long does it take to make the complete trip from bottom to top?

**Question2**

A police car is travelling at a velocity of 18.0 m/s due north, while a car zooms by at a constant velocity of 46.0 m/s due north. After a reaction time 0.400 s the policeman begins to pursue the speeder with an acceleration of 4.00 m/s^2. Including reaction time, how long does it take for the police car to grab up with the speeder?

**Question3**

A 50.0g ball travelling at 25m/s bounces off a brick wall and rebounds at 22m/s. If the ball is in contact with the wall for 3.50 ms, what is the magnitude of the average acceleration of the ball during this time period?

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