# Measure the distances y and x for x make the

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horizontal direction. Measure the distances y and x. For x, make the measurement for all the 5 launchings and take the average. Always measure from the mark (“Launch Position of Ball”). Record data in Data Table I. 3. Using y and the average x, calculate 4. Measure the height H above the floor from the center of the hole of the ring target. 5. Calculate the distance D where the target should be placed for the ball to pass through the hole. Clearly show your calculations.

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6. Release the ball from the same loading position at the Mini Launcher, measure the distance D where the ball actually passes through the hole. 7. Repeat steps 4 through 6 for a different height of the hole of the ring target. 8. For each height of the hole of the ring target, record the results in Data Table II. Part II. Projectile Motion in an Angle relative to Horizontal 1. Place the counter tray upside down on top of the table. 2. Adjust the angle of inclination to be certain angle . Adjust the height of the Mini Launcher to make sure the mark (“Launch Position of the Ball”) at exact same height as the tray. 3. Place a carbon paper on top of the tray. Release the ball from Launcher and let it hit the tray. Launch the ball for 5 times. Measure the horizontal range R for all the 5 launchings and take the average. Always measure form the mark (“Launch Positions of Ball”). 4. Using , R and y=0, calculate 5. Record data in Data Table III. 6. Measure the height above the floor H to the release the point of projection. 7. Using , and y= -H, and , calculate the distance D where the projectile will strike the floor. Show your calculation on a separate calculation sheet. 8. Release the ball from the same loading position at the Launcher. Measure the distance D where the projectile strikes the floor (using carbon paper).

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