1 answer

Moving along a straight line

Question:

The position of a particle moving along the x axis isgiven in centimeters by x = 9.75 + 2.50t3, where t is in seconds.Consider the timeinterval t = 2.00 s to t = 3.00 s.(a) Calculate the average velocity.
correct check mark cm/s
(b) Calculate the instantaneous velocity at t = 2.00s.
correct check mark cm/s
(c) Calculate the instantaneous velocity at t = 3.00s.
correct check mark cm/s
(d) Calculate the instantaneous velocity at t = 2.50s.
correct check mark cm/s
(e) Calculate the instantaneous velocity when the particle ismidway between its positions at t = 2.00 s and t= 3.00 s.
wrong check mark cm/s
(f) Graph x versus t and indicate your answersgraphically. (Do this on paper. Your instructor may ask you to turnin the graph.)
For letter (e), I keep calculating it but keep getting the wronganswer.

Answers

It should be the same as (d)..

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