Module 2—Motion in Two Dimensions

Read

 

Read “Projectile Motion” on pages 102 to 104 of your textbook. As you read, look for the answer to the following Self-Check question.

 

Self-Check

 

SC 1. What is the main difference between the horizontal motion and the vertical motion of a projectile?

 

Check your work.
Self-Check Answer

 

SC 1. The horizontal motion of a projectile is uniform motion, where the horizontal velocity component remains constant. On the other hand, the vertical motion is accelerated motion, with the acceleration due to gravity remaining constant.

 

Read

 

Read “Objects Launched Horizontally” and “Projectile Motion” on pages 104 to 108 of your textbook to see how what you have learned in this lesson is used in solving problems. As you read, look for the answer to the following Self-Check questions.

 

Self-Check

 

SC 2. For projectiles launched in the horizontal (x) direction where ax = 0, what does the equation become?

 

SC 3. For projectiles launched in the horizontal (x) direction where the initial vertical velocity (viy) = 0, what does the equation become?

 

Check your work.
Self-Check Answers

 

SC 2. The equation simplifies to Δdx = vix Δt.

 

SC 3. The equation simplifies to .