# Mini-Quiz: Effect of Gravity on an Artillery Projectile

by Ron Kurtus (revised 12 January 2011)

Take this Mini-Quiz to check your understanding of the lesson material.

1. Why is the muzzle velocity broken into perpendicular components?

To simplify the mathematics when the height is small

So that the velocities add up to be 90°

Because the components act independently of each other

2. What angle would give you the maximum vertical displacement for a given initial velocity?

45°

90°

180°

3. Why would you use the larger complementary angle to project a certain horizontal displacement?

To avoid hitting something that might be in the way

Because the projectile will go further with the larger angle

You should always use the smallest possible angle

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

Be a "straight-shooter"

## Resources and references

Ron Kurtus' Credentials

### Websites

Trajectories - Hyperphysics

Projectile Motion - Wikipedia

Projectile Motion Equations And Formulas Calculator - AJ Design Software

Trajectory of a projectile - Wikipedia

Characteristics of a Projectile's Trajectory - Physics Classroom

Gravity Resources

### Books

Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.

## Students and researchers

www.school-for-champions.com/science/
mini-quiz_gravity_artillery_projectile.htm

## Where are you now?

School for Champions

Gravity topics

## Gravitation

### Let's make the world a better place

Be the best that you can be.

Use your knowledge and skills to help others succeed.

Don't be wasteful; protect our environment.

#### You CAN influence the world.

The School for Champions helps you become the type of person who can be called a Champion.