User's Manual

Mini Launcher 012-05479B

Part C: Predicting the Range of the Ball Shot at a Negative Angle

➀ Adjust the Mini Launcher to launch at an angle between 10 and 40 degrees below the

horizontal and record this angle in Table 1.3.

➁ Using the initial velocity and vertical distance found in the first part of this experiment,

calculate the new time of flight and the new horizontal range for a projectile launched at

the new angle. Record in Table 1.3.

➂ Draw a line across the middle of a white piece of paper and tape the paper on the floor so

the line is at the predicted horizontal distance from the Mini Launcher. Cover the paper

with carbon paper.

➃ Shoot the ball ten times.

➄ Measure the ten distances and take the average. Record in Table 1.3.

Analysis

➀ Calculate the Total Average Distance. Record in Table 1.3.

(Total Average Distance = Distance from Edge of Paper + Horizontal Distance to paper

edge)

➁ Calculate and record the percent difference between the predicted value and the resulting

average distance when shot at an angle.

➂ Estimate the precision of the predicted range. How many of the final 10 shots landed

within this range?

Trial Number Distance from Edge of Paper

Average

Total Average Distance

Angle below horizontal = ______________ Horizontal distance to paper edge = ____________

Calculated time of flight = _____________ Predicted Range = ____________

Table 1.3 Confirming the Predicted Range