An object falls from rest, its equation of motion is s = -16t2, where • tis the number of seconds in the time that has elapsed since the object left the starting point; • s is the number of feet in the distance of the object from the starting point at t seconds, and the positive direction is upward. Now, consider a stone which is dropped from a building 256 feet high.
An object falls from rest, its equation of motion is s = -16t2, where • tis the number of seconds in the time that has elapsed since the object left the starting point; • s is the number of feet in the distance of the object from the starting point at t seconds, and the positive direction is upward. Now, consider a stone which is dropped from a building 256 feet high.
Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter8: Rational Expressions And Equations
Section8.9: Use Direct And Inverse Variation
Problem 8.174TI: The distance a moving body travels, d, varies directly with time, t, it moves. A train travels 100...
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Transcribed Image Text:An object falls from rest, its equation of motion is s = -16t?, where
• t is the number of seconds in the time that has elapsed since the object
left the starting point;
• s is the number of feet in the distance of the object from the starting point
at t seconds, and the positive direction is upward.
Now, consider a stone which is dropped from a building 256 feet high.
Transcribed Image Text:What is the instantaneous velocity of the stone 2 seconds after it is
dropped?
-32 ft/sec
128 ft/sec
64 ft/sec
-64 ft/sec
O none of these
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