4. Using the date from the table, calculate the finat velochty of the ball uning the formula \( v f= \) at since \( v=0 \). Try calculating the final volocity usting the formulat \( v_{1}=\sqrt{2 a_{k} \mathrm{~h}} \) and compare youtanswers.
Guide Question:
Q 5. What is the velocity of the ball just before it hils the ground?
5. Using a very long string. get the actual height of the buliding.
Guide Questions:
6. How will you compare the actual height of the bullding from the reatil of the experiment?
Q7. What is the percentage error?
Activity 3:
You Raise Me Up!
Objectives:
- Determine the initial velocity of a ball thrown upward:
- Record the time for the ball to reach the ground;
- Record the time for the ball to reach its maximum height, and
- Calculate the maximum height reached by the ball thrown vertically upward.
Materials:
stopwatch
ball (e.g. tennis ball, sepak takraw, etc.)
Procedure:
1. Throw the ball vertically upward in the air as hard as you can in an open space.
2. Using your stopwatch, ask your classmate to record the total time the ball remains in the air. Get the time of the ball from point of release to its maximum height by dividing the total time into two. Record your data.
TABLE 3. Data on the Total Time and Time of the Ball in the Air
\begin{tabular}{|c|c|c|}
\hline Trial & Total Time, (s) & Time,t(s) \\
\hline 1 & & \\
\hline 2 & & \\
\hline 3 & & \\
\hline Average & & \\
\hline
\end{tabular}
Guide Question:
Q 8. What do you think happens to the speed of the ball as it reaches its maximum height?
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