Projectile Motion

If you throw a baseball straight up, what is its velocity at the highest point?

• 9.8 m/s²
• 9.8 m/s
• 0 m/s²
• 0 m/s

If you throw a baseball straight up, what is its acceleration at the highest point?

• -9.8 m/s²
• -9.8 m/s
• 0 m/s²
• 0 m/s

What is the horizontal acceleration of a projectile?

• 0 m/s²
• -9.8 m/s²

Velocity is different from speed in that velocity is speed in a given direction.

• True
• False

What are the components of this vector?

• South and East
• South and West
• North and East
• North and West

What is the resultant of these two vectors?

• +2a
• 0
• -2a
• +a

Consider drops of water leaking from a water faucet. As the drops fall they 

• remain at a relatively fixed distance from each other
• get farther apart
• get closer together

What is the horizontal acceleration of a projectile?

• 0 m/s²
• -9.8 m/s²
• 0 m/s
• -9.8 m/s

Which of the following would NOT be considered a projectile? 

• a cannonball thrown straight up
• a cannon ball rolling down a slope
• a cannonball rolling off a table
• a cannonball thrown in the air

What is the vertical acceleration of a projectile?

• 0 m/s²
• -9.8 m/s²
• 0 m/s
• -9.8 m/s