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Q1. An elevator is initially moving upward at a speed of 11.18 m/s. The elevator experiences the constant downward acceleration of magnitude 4.44 m/s2 for 2.87 s.

Q2. A lead ball is dropped into a lake from a diving board 4.6 m above the water. After entering the water, it sinks to the bottom with a constant velocity equal to velocity with which it hit the water. The ball reaches the bottom 4.8 s after it is released. How deep is lake?

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