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Mini-Quiz of Overview of Gravity Equations for Objects Projected Downward by Ron Kurtus - Succeed in Understanding Physics. Also refer to physical science, acceleration, displacement, time, calculation, square-root, School for Champions. Copyright © Restrictions

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

by Ron Kurtus (revised 27 December 2010)

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.


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Resources and references

Author's Credentials

The following resources provide information on this subject:

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Acceleration due to Gravity Calculations - from Western Washington University

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Top-rated books on Simple Gravity Science

Top-rated books on Advanced Gravity Physics


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