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Mathematik-Online problems:

Problem 445: Differentiation - Distance/Velocity

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
The height $ s$ (in meteres) at time $ t$ (in seconds) of a gold coin dropped from one of the Giza pyramids is modeled by

$\displaystyle s=-16t^2+140.$

(a)
Find the average velocity over the time interval $ [1,2]$.
(b)
Find the instantaneous velocity at time $ t=1.5$.
(c)
How long it will take the pound to hit the ground?
(Author: Rafee )

see also:

[Solutions]
  automatisch erstellt am 14. 10. 2004