# physics

posted by eric

a 65kg person dives into the water from the 10m platform. she comes to a stop 2m below the surface of the water. what net force did the water exert on the swimmer?

so for the net force i got -2548N

vf^2 = 0 + 2(9.8)(10)
vf^2 = 196
vf=14m/s therefore to get the force normal i first got the acceleration of the force normal by:

since vf at 2m into the water is 0

0 = 196 + (2)(a)(2)
-196 = 4a
-49 = a

for the force normal i did the n = m*a

normal = 65*-49
normal = -3185

force gravity = m*g
forge gravity = 65 * 9.8
force gravity = 637

force gravity + force normal = net force
net force = 637 + (-3185)
net force = -2548N

## Similar Questions

1. ### Physics

A 56 kg swimmer jumps off a 15 m tower. Find the swimmer's velocity when hitting the water. The swimmer comes to a stop 2 m below the surface. Find the net force exerted by the water.
2. ### physics

A 65 kg diver jumps off of a 10.0 m tower. a. Find the diver's velocity when he hits the water. b. The diver comes to a stop 2.0 m below the surface. Find the net force exerted by the water. Ok, im confused, I found velocity which …
3. ### Physics

A 67.0 kg person, standing on a diving board, dives straight down into the water. Just before striking the water, her speed is 5.50 m/s. At a time of 1.75 s after she enters the water, her speed is reduced to 1.10 m/s. What is the …
4. ### Physics

an athlete drops from rest from a platform 10m above the surface of a 5m deep pool. Assume that the athlete enters the water vertically and moves through the water with the constant acceleration, what is the minimum average force with …
5. ### Physics

A 69 kg swimmer free-falls off a 10.0 m diving platform. The diver comes to a stop 2.7 m below the water's surface. What is the magnitude of the force exerted by the water on the swimmer. (assume a positive direction is up) I calculated …
6. ### Physics

A 69 kg swimmer free-falls off a 10.0 m diving platform. The diver comes to a stop 2.7 m below the water's surface. What is the magnitude of the force exerted by the water on the swimmer. (assume a positive direction is up) I calculated …
7. ### science

a 100 pound life guard dives underwater to save a 150 pound person who is drowning the life guard will be able to lift the person to the surface because a:the buoyant force acts as an upward force on the person b:the force of gravity …
8. ### Science

A swimmer that pushes the water back with feet and arms what is the reaction force?
9. ### Science

Please help A swimmer that pushes the water back with feet and arms What will happen to the movement of the swimmer as they push the water back?
10. ### Science

A swimmer that pushes the water back with feet and arms 1. What will happen to the movement of the swimmer as they push the water back?

More Similar Questions