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Homework Help: A ball is dropped from a height of 39.0 m.

  1. Sep 27, 2012 #1
    1. The problem statement, all variables and given/known data
    A ball is dropped from a height of 39.0m. The wind is blowing horizontally and imparts a constant acceleration of 1.20 m/s^2 to the ball.
    a. Show that the path of the ball is a straight line and find the values of R and θ (R is the distance on the x-axis and θ is the angle between the point where the ball hits the ground and the x-axis)
    b. How long does it take for the ball to reach the ground?
    c. With what speed does the ball hit the ground?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Sep 27, 2012 #2


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    Homework Helper

    The acceleration due to the wind and the acceleration due to gravity are at rightangles to each other and thus vertical and horizontal motion can be analysed independently.

    Graph this motion to get a picture.

    The ball starts at (0,39)

    Calculate how far vertically and horizontally the ball moves in 1 second - plot that point.

    Repeat for 2 seconds.

    Do those three points form a straight line?

    That would be a place to start.
  4. Sep 27, 2012 #3
    Prove that the relation of y and x is in form of a straight line.

    m is the gradient.
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