Physics

posted by .

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?

  • Physics -

    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

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 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?
  2. 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?
  3. 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?
  4. 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 upward …
  5. 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?
  6. Physics

    A ball is thrown vertically upward with an initial speed of 11 m/s . Then, 0.67 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 25 m/s . How far above the release point will …
  7. 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?
  8. physics

    A ball is thrown vertically upward with an initial speed of 25 m/s. Then, 1.8 s later, a stone is thrown straight up (from the same initial height as the ball) with an initial speed of 32.1 m/s . How far above the release point will …
  9. 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?
  10. 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?

More Similar Questions