Table of Contents

Phase 1 - Liftoff

Which Launch Is Successful?

Teacher Notes

1. This activity can be completed individually or in pairs.

2. The approximate time for completion is 15-30 minutes.

3. Students should be encouraged to use accurate terminology, appropriate vocabulary, and clarity of language in their explanations (See Student
   Instruction #3).

4. Answers:

   • a. Launch C is successful.
   • b. The measure of < A (or <CAB) at liftoff is 90°.
   • c. I used a protractor. The measure of < A in Launch A is 87°. The measure of < A in Launch B is 93°. Only Launch C has a measure of 90° for < A.

Which Launch is Successful?

In Phase 1 – Liftoff you learned how important angle measurement is for a successful launch.

Here are the angle measurements for three different launches.

• a. Which one would result in a successful launch?
• b. How did you determine which one is successful?
• c. Explain your choice.