2D Motion - Projectiles

Question 1

What is the vertical (y) acceleration of a projectile?

Answer 1

9.8 (gravity)

Question 2

What is the horizontal (x) acceleration of a projectile?

Answer 2

0 (constant velocity)

Question 3

What two directions need to be kept separate in projectile motion problems?

Answer 3

x and y

Question 4

If you know vx and vy for a projectile, how do you determine v?

Answer 4

Pythagorean Theorem

Question 5

If you know v for a projectile, how do you find vx and vy?

Answer 5

Use trig and the angle to break it into components

Question 6

What is vy for a projectile at its highest point?

Answer 6

0 m/s

Question 7

What fraction of the total time does it take a projectile to reach its highest point?

Answer 7

Half

Question 8

What is the only equation for a projectile in the horizontal direction?

Answer 8

x = v*t