Post a New Question

physics

posted by .

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 imparted so that it lands on the rooftop of the second building?

  • physics -

    h = Yo*t + 0.5g*t^2 = 100 - 25 = 75 m.
    o + 4.9t^2 = 75.
    t^2 = 15.31 m.
    Tf = 3.91 s. = Time to fall to roof.

    Dx = Xo * Tf = 20 m.
    Xo * 3.91 = 20.
    Xo = 20 / 3.91 = 5.11 m/s. = hor. velocity.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question