Posted by **Shundale** on Sunday, September 7, 2008 at 7:07pm.

A diver springs upward with an initial speed of 2.1 m/s from a 4.5 m board.

(a) Find the velocity with which he strikes the water. (Hint: When the diver reaches the water, his displacement is y = -4.5 m (measured from the board), assuming that the downward direction is chosen as the negative direction.)b. What is the highest point he reaches above the water?

- physics -
**drwls**, Sunday, September 7, 2008 at 7:49pm
(a) His kinetic energy will increase by M g H, where H = 4.5 m. Therefore

V2^2 = V1^2 + 2 g H

V1 = 2.1 m/s

(b) The increase in height at the highest point, h, is the elevation at which the potential energy increases by (1/2)MV1^2

2 g h = V1^2

## Answer this Question

## Related Questions

physics - A diver springs upward with an initial speed of 1.66 m/s from a 3.0-m ...

Physics - A diver springs upward with an initial speed of 2.23 m/s from a 3.0-m ...

physics - A diver springs upward with an initial speed of 1.6 m/s from a 3.5-m ...

helpp in physics! so tough! - A diver springs upward with an initial speed of 2....

Physics - "A diver springs upward with an initial speed of 1.8 m/s from a 3.0 m ...

physics - A diver springs upward with an initial speed of 2.58 m/s from a 3.0-m ...

physics - A diver of mass m drops from a board 12.0 m above the water's surface...

physics - A diver springs upward from a board that is 2.98 meters above the ...

Physics - A diver springs upward from a board that is 3.20 m above the water. At...

Physics - A diver springs upward from a board that is 4.40 m above the water. At...