An Olympic diver falls from rest from the platform 10m high. At what velocity does the diver hit the water is acceleration in 9.8m/s^2.
Do I assume "rest" means a initial velocity of 0? Could the formula be:
d= (vf^2-vi^2)/2(a) ?
as in d=10, a=9.8 vi=0
vf = √(d x 2(a)+ vi^2
vf= √(10 x 2(9.8) + 0^2
I'm not sure if this is right, the number seems too large... please help, thank you!

  1. 👍
  2. 👎
  3. 👁
  1. d = (1/2)(9.8)t^2
    10 = 4.9 t^2
    t = 1.43 seconds falling

    v = a t
    v = 9.8 (1.43) = 14 m/s , yes right
    Your way is fine. I just cheated to get it faster.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. College Algebra

    A sky diver jumps from a reasonable height above the ground. The air resistance she experiences is proportional to her velocity, and the constant of proportionality is 0.23. It can be shown that the downward velocity of the sky

  2. Physics

    Janet jumps off a high diving platform with a horizontal velocity of 1.73 m/s and lands in the water 1.8 s later. How high is the platform? The acceleration of gravity is 9.8 m/s2 . Answer in units of m

  3. Physics

    A diver performing a double somersault spins at an angular speed of 4.5 π rad/s precisely 0.70s after leaving the platform. Assuming the diver begins with zero initial angular speed and accelerates at a constant rate, what is the

  4. 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 a little confused about this

  1. Advanced Functions

    A diver is on the 10 m platform, preparing to perform a dive. The diver’s height above the water, in metres, at time t can be modelled using the equation h(t)= 10+ 2t - 4.9t^2. a) Determine when the diver will enter the water.

  2. Physics

    Miss E. deWater, the former platform diver of the Ringling Brothers' Circus, dives from a 20 meter high platform into a shallow bucket of water. a. State Miss E.deWater's acceleration as she is falling from the platform? b. What

  3. math

    MODELING REAL LIFE A diver is diving from a platform 10 meters above the water. The diver reaches a depth of 4 meters. What is the change in elevation of the diver?

  4. Algebra 1

    A diver jumps from a platform 25 feet above the surface of the water. The diver's height above the water is given by the equation h(t)=-16t^2+14.5t + 25, where t is the time, in seconds, after the diver jumps. A.)When will the

  1. physics

    a diver jumps off a cliff with an intial velocity of 5.0 m/s. the diver strikes the water 3.0s later. what is the vertical speed of the diver upon reaching the surface of the water?

  2. math

    a diver jumps from a platform at time t=0 seconds. the distance of the diver above water level at time t is given by s(t)=-4.9t^2 +4.9t+10, where s is in meters c.) find when velocity equal zero. find the maximum height of the

  3. Physics

    A high diver of mass 65.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.30 s after her feet first touch the water, what average upward force

  4. physics

    a yo-yo of mass 440kg measuring 0.9m in radius was dropped from a platform 63m high. One end of the string was tied to the platform, so the yo-yo unwinds as it descends. Assuming the axle of the yo-yo has a radius of 0.2m, find

You can view more similar questions or ask a new question.