physics!-concervation of energy equations

posted by .

2. a 755N diver drops from a board 10.0 m above the water's surface. Find the divers speed 5.00 m above the water's surface. then find the diver's speed just before striking the water.

3. if the diver in item 2 leaves the board with an initial upward speed of 2.00 m/s find the divers speed when striking the water.

i don't know how to start these two at all...i don't need the answer i just need the formulas that i use for it...i don't understand which ones to use.. plz help

  • physics!-concervation of energy equations -

    you can use:

    (vf)^2 = (v0)^ + 2as

    where vf is "final velocity"
    v0 is "initial velocity"

    a is acceleration
    and s is distance

  • physics!-concervation of energy equations -

    is the initial velocity squared? it has an ^ ???

  • physics!-concervation of energy equations -

    yes, if the initial velocity is squred

  • physics!-concervation of energy equations -

    wait...if this is conservation of energy, better to use:

    convert the potential energy into kinetic energy! (sorry).

    potential energy is mgh, and kinetic enery is (1/2)m*v^2

  • physics!-concervation of energy equations -

    lol wat do i do with that...do i put it equal to eachother

  • physics!-concervation of energy equations -

    So, it depends on what you're currently studying. If you're studying equations of motion, then use my first suggestion, but if you're studying conservation of energy, use mgh = (1/2)m*v^2.

    The m's cancel out:
    So, gh = v^2/2. You can solve for v, the velocity, by setting h, the height, first to 5, and then to 10.

  • oxgdkiwnp yqbmurxdt -

    zklsvhmiy uxjarfh rvglzy vmai guhv wjkaqem gelfhdnt

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    2. a 755N diver drops from a board 10.0 m above the water's surface. Find the divers speed 5.00 m above the water's surface. then find the diver's speed just before striking the water. 3. if the diver in item 2 leaves the board with …
  2. physics

    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 diver’s speed just before she enters the water?
  3. john tyler

    a 751 diver drops from a board 9.10 m above the water's surface. How much kinetic energy does the diver have right before he hits the water?
  4. physics

    A 751 N diver drops from a board 9.10 m above the water’s surface. The acceleration of gravity is 9.81 m/s2 . a) Find the diver’s speed 3.00 m above the water’s surface. Answer in units of m/s.
  5. physics

    A diver of mass m drops from a board 12 m above the water surface. Calculate his speed 6m above the water surface. What is the speed of the diver just he strikes the water?
  6. physics

    A 755 N diver drops from a board 10.0m above the water's surface.Find the diver's speed 5.00 m above the water's surface. Then find the diver's speedjust before striking the water.
  7. physics- energy and work

    A 47.6-kg diver steps off a 10.82 m high diving board and drops straight down into the water. If the diver comes to rest 5.3 m below the surface of the water, determine the average resistance force exerted on the diver by the water. …
  8. physics

    A diver of mass m drops from a board 12.0 m above the water's surface, as shown in the figure. Neglect air resistance. Suppose the diver vaults off the springboard, leaving it with an initial speed of 3.96 m/s upward. Use energy conservation …
  9. TVTC

    Physics...a diver of mass m drops from a board of 10m above water surface. find his speed at 5m
  10. 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?

More Similar Questions