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

  1. 👍
  2. 👎
  3. 👁
  1. no initial vertical speed
    so
    v = 0 -9.8 t
    v at water = -9.8*1.8 = - 17.6 m/s

    h = Hi + Vi t -4.9 t^2
    0 = Hi + 0 -4.9(1.8)^2
    Hi = 4.9* 1.8^2 = 15.9 m
    (very high indeed)

    The next part of the question is of course how far did Janet land from under the platform:
    d = U t = 1.73 (1.8) = 3.11 m

    1. 👍
    2. 👎
  2. I love you

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A 65kg trampoline artist jumps vertically upward from the top of a platform with a speed of 5.0m/s. a) How fast is he going as he lands on the trampoline, 3.0m below. b) if the trampoline behaves like a spring with a spring

  2. Physics

    A metal block of mass 5kg lies on a rough horizontal platform. If a horizontal force of 8 N applied to the block through its center of mass just slides the block on the platform, then the coefficient of limiting friction between

  3. physics

    the diver acheives a horizontal velocity of 3.75 m/s from a diving platform located 6.0 m above the water. How far from the edge of the platform will the diver be when she hits the water?

  4. Physics

    An aerialist on a high platform holds onto a trapeze attached to a support by an 8.0-m cord. (See the drawing.) Just before he jumps off the platform, the cord makes an angle of 41° with the vertical. He jumps, swings down, then

  1. physics

    A ball is released from a tower at a height of 100 meters toward the roof of another tower that is 25 meters high. The horizontal distance between the two towers is 20 meters. With what horizontal velocity should the ball be

  2. Physics

    A diver dives off a 32-meter high diving board into the water below. If the diver pushes off with an initial horizontal velocity of 1.2 m/s, how far from the base of the board does she land?

  3. physics

    Janet jumps off a high-diving platform with a horizontal velocity of 3.5 m/s and lands in the water 1.7 s later. How high is the platform, and how far from the base of the platform does she land?

  4. Algebra

    A high diver is standing on a platform above a pool. Her diving path can be modeled by the function h(t)=-16t^2+8t+12, where h is her height in feet above the water and t is time in seconds. a) How high is the platform (initial

  1. physics

    bill steps off a 3.0-m-high diving board and drops to the water below. At the same time Ted jumps upward with a speed of 4.2 m/s from a 1.0-m-high diving board. choosing the origin to be at the water's surface and upward to be the

  2. math

    A diver is on the diving platform at Wonder Mountain in Canada’s Wonderland. She jumps up and dives into the water at the base of the mountain. The equation is d = -3t^2 + 6t + 45 At what time is she 36 m above the water? When

  3. Physics

    A diver jumps off a 10m diving board with an initial upward velocity of 5.0 m/s. What is the diver's velocity after 1.5 seconds?

  4. Physics

    A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity? (b) how high above the

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