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veloix
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Homework Statement
A student drives a moped along a straight road as described by the velocity versus time graph in Figure P2.14. The divisions along the horizontal axis represent 1.5 s and the divisions along the vertical axis represent 3.5 m/s.
Sketch this graph in the middle of a sheet of graph paper. (Do this on paper. Your instructor may ask you to turn in your work.)
Figure P2.14
<img src=http://a425.ac-images.myspacecdn.com/images01/103/l_3fca2200153cb8eb21ea540316125000.gif>
(a) Directly above your graph, sketch a graph of the position versus time, aligning the time coordinates of the two graphs. (Do this on paper. Your instructor may ask you to turn in your work.)
(b) Sketch a graph of the acceleration versus time directly below the vx-t graph, again aligning the time coordinates. (Do this on paper. Your instructor may ask you to turn in your work.)
On each graph, show the numerical values of x and ax for all points of inflection.
(c) What is the acceleration at t = 9.0 s?
m/s2
(d) Find the position (relative to the starting point) at t = 9.0 s.
m
(e) What is the moped's final position at t = 13.5 s?
m
Homework Equations
all of the kinematics and equations dealing with velocity,time,positon,accerlation
will help out
The Attempt at a Solution
let see i figured the part looking for accelration out by taking the a tanget of the line near 9s using equation for slope form. vf-vi/tf-ti= 0-14m/s/12s-9s=-4.67m/s^2
now the rest I am totaly lost I've tried to intergrate the function of the graph but I am not sure how to come up with the equation of the function. can anyone help me out?