Physics

A. A baseball is seen to pass upward by a window 28.1 m above the street with a vertical speed of 13.7 m/s. If the ball was thrown from the street, what was its initial speed?

B. What altitude does it reach?

C. How long before the ball passed the window was it thrown?

D. How long after the baseball passed the window does it reach the street again?

asked by Ashley
  1. A. Total energy per mass = Vo^2/2
    = (13.7)^2/2 + g*28.1
    Solve for initial speed, Vo

    B. Vo^2/2 = g*Hmax
    Solve for max altitude, Hmax

    c. (Velocity change)/g = time going up
    = (Vo - 13.7)/g

    d. (time spent going up after passing window) + (fall time)
    = 13.7/g + Vo/g

    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A baseball is seen to pass upward by a window 24 m above the street with a vertical speed of 8 m/s. The ball was thrown from the street. (a) What was its initial speed? (b) What altitude does it reach? (c) How long after it was
  2. physics

    A baseball is seen to pass upward by a window 27 m above the street with a vertical speed of 12 m/s. The ball was thrown from the street. (a) What was its initial speed? (b) What altitude does it reach? (c) How long after it was
  3. physics

    A baseball is seen to pass upward by a window 29 m above the street with a vertical speed of 15 m/s. The ball was thrown from the street.After how many more seconds does it reach the street again?
  4. Physics

    A baseball traveling upward passes a window 28.0 m above the street with a vertical speed of 13.0 m/s. If the ball was thrown from street level, what is the maximum height that the baseball reaches?
  5. Physics

    A baseball traveling upward passes a window 29.0 m above the street with a vertical speed of 14.0 m/s. If the ball was thrown from street level, what is the maximum height that the baseball reaches? Im stumped, please tell me what
  6. physics

    A baseball traveling upward passes a window 29.0 m above the street with a vertical speed of 14.0 m/s. If the ball was thrown from street level, what is the maximum height that the baseball reaches? im completely stumped, this is
  7. Physics Correction

    You drop a ball from a window on an upper floor of a building and it is caught by a friend on the ground when the ball is moving with speed vf. You now repeat the drop, but you have a friend on the street below throw another ball
  8. Physics

    A ball thrown by a boy in the street is caught 5 s later by another boy on the balcony of the house 10 m away and 3 m above the street level. What is the initial speed of the ball? What is the angle above the horizontal at which
  9. Physics

    A small rock is thrown vertically upward with a speed of 17.0m/s from the edge of the roof of a 22.0m tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be
  10. Physics

    A small rock is thrown vertically upward with a speed of 13.0 m/s from the edge of the roof of a 20.0 m tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be

More Similar Questions