Title: Softball Toss
Objectives: Using time, distance, g, and vector analysis, determine velocity of ball thrown into air.
Materials: softball, stopwatch, football field.
NOTE: Each “team” has 1 thrower, 2 timers (1 optional spotter)
1. Prepare your lab data sheet to record your throw:
a. total time in the air to 0.1 seconds based on an average of the two timers.
b. the horizontal distance accurate to 1 meter (throw must be perpendicular to goal line)
2. Throw the softball 10 - 20 m to maximize "hang time." Use a high angle of throw.
Analysis of your throw:
1. Using the motion equations and your data for time and distance, determine the vertical & horizontal velocities and the maximum height of the ball.
2. Using graphical vector analysis (i.e., 1.0 cm = 1.0 m/s), draw to scale the vertical velocity component and the horizontal velocity component. The velocity and angle that you threw the ball is represented by the resultant. Determine for your throw the release velocity and the angle of throw from the horizontal.
3. In the absence of air resistance, predict & explain the ideal angle to maximize horizontal distance.
4. Determine the following for your throw:
a) g at the maximum height of the throw.
b) the velocity of the ball at just prior to impact.
c) the vertical and horizontal velocities at the top of the parabolic flight.
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