A lead ball is dropped into a lake from a diving board 4.90 m above the water. I

Question

A lead ball is dropped into a lake from a diving board 4.90 m above the water. It hits the water with acertain velocity and then sinks to the bottom with this sameconstant velocity. It reaches the bottom 5.00 s after it is dropped. (Assume the positivedirection is upward.) (a) How deep is the lake?
1 m

(b) What is the average velocity of the ball?
2 m/s

(c) Suppose that all the water is drained from the lake. The ballis now thrown from the diving board so that it again reaches thebottom in 5.00 s. What is the initialvelocity of the ball?
3 m/s (a) How deep is the lake?
1 m

(b) What is the average velocity of the ball?
2 m/s

(c) Suppose that all the water is drained from the lake. The ballis now thrown from the diving board so that it again reaches thebottom in 5.00 s. What is the initialvelocity of the ball?
3 m/s

Explanation / Answer

the answers were still wrong

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