In the given figure, the horizontal axis is the elapsed time with each box as 0.

Question

In the given figure, the horizontal axis is the elapsed time with each box as 0.5 second. First, assume that the vertical axis is the displacement x with each box representing 0.25 meters. Figure out the approximate magnitude of instantaneous velocity at point B In which region(s), if any, does the object have negative v_z? Why? Calculate the average velocity v_z between points D and F. Now, assume that the vertical axis shows the velocity v_x, with each box representing 0.5 m/s In which reglon(s), If any, does the object have non-constant acceleration a_x? Why? Calculate the average acceleration a_x, between points C and E.

Explanation / Answer

a) Instantneous velocity at B will be

V = 0.25/.5 = 0.5 m/s

b) EF is the region with negetive velocity

c) In this region the displacement is 5 blocks equal to 1.25 m and time taken is also 5 blocks

Hence the speed will be = 1.25 / 2.5 = .5 m/s

d) The accelration is non constant in AB and CD region as the line is curved ,showing change in velocity

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