List of Topics

SfC Home > Physics > Gravity >

Mini-Quiz: Overview of Gravity Equations for Objects Projected Downward

by Ron Kurtus (updated 29 May 2023)

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

1. If the initial velocity is 32 ft/s, what is the velocity at 1 second?

64 ft/s

32 ft/s

You also need the displacement to solve the problem

2. If the initial velocity is 10 m/s, what is the displacement at v = 20 m/s?

y = (20 − 10)/19.6 meters

y = (400 − 100)/19.6 meters

y = (400 − 100)/64 feet

3. How long does it take a ball thrown downward to hit the ground?

It only depends on the displacement to the ground

12.3 seconds

It depends on the initial velocity and the height from which it was thrown

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.

Use your skills wisely

Resources and references

Ron Kurtus' Credentials


Gravity Resources


(Notice: The School for Champions may earn commissions from book purchases)

Top-rated books on Simple Gravity Science

Top-rated books on Advanced Gravity Physics

Students and researchers

The Web address of this page is:

Please include it as a link on your website or as a reference in your report, document, or thesis.

Copyright © Restrictions

Where are you now?

School for Champions

Gravity topics

Mini-Quiz: Overview of Gravity Equations for Objects Projected Downward

Gravity and Gravitation

Gravity topics



Derivations of equations

Falling objects

Projected downward

Projected upward

Gravity and energy

Gravity and work

Effects of gravity

Gravity applications


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.

Live Your Life as a Champion:

Take care of your health

Seek knowledge and gain skills

Do excellent work

Be valuable to others

Have utmost character

Be a Champion!

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