# physics

posted by .

A diver runs horizontally off the end of a diving board with an initial speed of 1.75 sec. If the diving board is 3.0 m above the water line, what is the diverâ€™s speed just before she enters the water?

• physics -

1.75 sec. should read 1.75 m/s

Equate total energy before and after dive:
(1/2)mv²=(1/2)mx²+mgh
=(1/2)m*1.75² + mg(3)
Cancel out m and solve for v.
g=acceleration due to gravity = 9.81 m/s².

• physics -

7.87

## Similar Questions

1. ### Physics

A swimmer runs horizontally off a diving board with a speed of 3.14 m/s and hits the water a horizontal distance of 2.16 m from the end of the board. How high above the water was the diving board?
2. ### Physics

A diver runs horizontally off the end of a diving board with an initial speed of 1.25 m/s. If the diving board is 3.20 m above the water, what is the diver's speed just before she enters the water?
3. ### Physics

A diver (mass = 75.0 kg) walks to the end of a flexible diving board. The end of the board bends down a distance of 0.55 m. The diver's weight on the diving board makes it behave like a spring. a) Determine the spring constant of the …
4. ### Physics

A high diver of mass 70 kg jumps off a diving board and enters the water with the speed of 10 m/s the average upward resistance force of water exerts on the diver is 200 N. How far in the water will the diver travel before coming to …
5. ### Physics

At the local swimming pool, the diving board is elevated h = 7.5 m above the pool surface and overhangs the pool edge by L = 2 m. A diver runs horizontally along the diving board with a speed of v0 = 3.4 m/s and then falls into the …
6. ### physics

Consider a case in which a 60 kg diver takes off from a diving board located at a height of 10 m above the water level and enters the water at a horizontal distance of 5 m from the end of the board. If the total time that the diver …
7. ### URGENT PHYSICS

Consider a case in which a 60 kg diver takes off from a diving board located at a height of 10 m above the water level and enters the water at a horizontal distance of 5 m from the end of the board. If the total time that the diver …
8. ### physics

a diver of mass 101 kg jumps upward off a diving board into water. Diving board is 6m above water. Driver has a speed of 1.2m/s. based on speed how high above the board will she rise?
9. ### physics 2 HELP PLEASE!!

Can someone help break this down.. Please tell me if what I identified is so far correct. Also what equations should I use?