Projectile motion

The only force acting on a projectile (arrow, football) AFTER it is launched is...

• launch force

• electric force

• gravity force

• push force

An object with projectile motion constantly changes direction.

• True

• False

To hit the bull’s eye of a target, you have to aim an arrow

• at the center of the bull’s eye

• below the bull’s eye

• to one side of the bull’s eye

• above the bull’s eye

A football in projectile motion has constant

• vertical velocity

• horizontal velocity

• position

• trajectory

Which of the following is an example of projectile motion

• an olympian swimming

• a football after it's thrown

• a plane flying at a constant height

• a car driving on the road

What falls faster, a bowling ball dropped straight down, or a bowling ball that is thrown horizontally (no vertical velocity)?

• The ball dropped straight down

• The ball thrown horizontally

• They both fall at the same rate

• There is no way to know

You throw a football at Mr. Goldsmith with a starting horizontal velocity of 7 m/s, what is the horizontal velocity when he catches it?

• 7 m/s

• 8m/s

• 16.81 m/s

• 0m/s

You throw a ball with a starting horizontal velocity of 4 m/s, and a vertical velocity of 0 m/s. What is the vertical velocity 3 seconds later?

• 4m/s

• -9.81 m/s

• 29.43 m/s

• -29.43 m/s

On the moon, gravity is weaker than on earth. If you drop a projectile, how long will it take to reach 10 m/s downwards?

• 2 seconds

• 5 seconds

• 6 seconds

• 10 seconds

You launch a projectile with a horizontal velocity of 6 m/s, how far has the projectile gone after 3 seconds?

• 6 meters

• 12 meters

• 18 meters

• 24 meters