16. The displacement (in feet) of a particle moving in a straight line is given by s = }1² – 6t + 23, where t is measured in seconds. (b) Find the instantaneous velocity when t = 8. (c) Draw the graph of s as a function of t and draw the secant lines whose slopes are the average velocities in part (a). Then draw the tangent line whose slope is the instantaneous velocity in part (b).

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A particle moves so that its position (in meters) as a function of time (in seconds) is r = î + 5t2 j + 5t k. (Use the following as necessary: t.) (a) Write an expression for its velocity as a function of time. V = m/s (b) Write an expression for its acceleration as a function of time. a = m/s?

I need part d and e

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A particle moves so that its position (in meters) as a function of time (in seconds) is r = î + 2t² j+ 2tk. (Use the following as necessary: t.) (a) Write an expression for its velocity as a function of time. v(t) = m/s (b) Write an expression for its acceleration as a function of time. d(t) = m/s2 Submit Answer

Please use the data given to answer all parts of question 1. thank you in advanced!

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A velocity can be negative based on your coordinate system. Is it possible to have a negative speed? Why/why not?

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