The purpose of this experiment is to examine the projectile motion of a ball launched horizontally. The initial velocity will be calculated. The range of the ball will be measured.
Horizontal launch of the ball allows computing the initial velocity v0 by measuring the height of the launch and the distance traveled by the ball: h=, s=v0 ∙ t
Solving these parametric equations for v0 gives us:
Where h and s are defined from the experiment
*projectile launcher and plastic ball
*stand with a clamp
1. We set up the projectile horizontal position.
2. We measured for the height at which the ball will be launched. h=0.310m 3. We put the plastic ball into the projectile launcher and charged it for the short range launch. 4. We made a test shot to determine the position of a sheet of white paper covered with a carbon paper. 5. We taped the sheet of white paper to the area of a ball landing. 6. We made five shots of the ball.
7. We measured the distance (range) of the ball motion on each trial, and the height it was launched from. 8. We calculated the initial velocity v0 for each trial.
All the obtained data has been recorded in the Table below.
Height, h (m)
Distance, s (m)
Velocity, 0 ()
Average Velocity, vav
Calculation of Velocity: 0=s
Calculation of Average Velocity: vav=(v01+v02+v03+v04+v05)
We examined the projectile motion of a ball launched horizontally. We found the range of motion was between 0.697m-0.744m. We calculated the average initial velocity and found it to be vav=2.90
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