A car starts from rest and accelerates at 5 m/s 2 . At t = 4 s , a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at t = 6 s ? (Take g = 10 m/s 2 )

1. A. 20 m/s, 0
2. B. 20 2 m/s, 0
3. C. 20 2 m/s, 10 m/s 2
4. D. 20 m/s, 5 m/s 2

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