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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.

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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.

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Use your skills wisely

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Gravity topics

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

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Gravity and Gravitation

• Overview of Gravity and Gravitation
• Gravity Resources

Gravity topics

• Overview of the Force of Gravity

Preliminaries

• Using Vectors in Gravity Equations
• Gravity Direction Convention

Basics

• Equivalence Principle of Gravity
• -- Gravity Acceleration is Constant
• -- Gravity on Earth versus on Moon
• Mass, Weight and Gravity
• -- Confusion about Mass and Weight
• Gravity and Horizontal Motion

Derivations of equations

• Gravity Equation Derivations
• Velocity-Time Gravity Equations
• Displacement-Time Gravity Equations
• Displacement-Velocity Gravity Equations

Falling objects

• Equations for Falling Objects
• Velocity Equations for Falling Objects
• Displacement Equations for Falling Objects
• Time Equations for Falling Objects

Projected downward

• Objects Projected Downward
• Downward Velocity Equations
• Downward Displacement Equations
• Downward Time Equations

Projected upward

• Objects Projected Upward
• Upward Velocity Equations
• Upward Displacement Equations
• Upward Time Equations

Gravity and energy

• Overview of Energy from Gravity
• Energy of Falling Objects
• Energy of Objects Projected Downward
• Energy When Projected Upward

Gravity and work

• Work by Gravity
• Work Against Gravity

Effects of gravity

• On Sideways Motion
• On an Artillery Projectile
• On a Rocket Projectile

Gravity applications

• Gravity and Newton's Cannon
• Escape Velocity from Gravity
• Artificial Gravity in Spacecraft
• -- Artificial Gravity Equations
• Center of Gravity

Gravitation

• Gravitation topics
• Overview of Gravitation

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