Question

You throw a rock straight up and it returns to your hand with the samc vertical speed you gave it. Up is positive and down is negative. Distance is measured from your hand a. Draw the rock's position vs. time graph on the left-hand axes b. Draw the rock's velocity vs. time graph on the middle axes c. Draw the rock's acceleration vs. time graph on the right-hand axes.

Answer 1

3. We know that, "Up" is positive and "Down" is negative.

(a) Draw the rock's position vs. time graph on the left-hand axes.

(b) Draw the rock's velocity vs. time graph on the middle axes.

(c) Draw the rock's acceleration vs. time graph on the right-hand axes.

Answer of all three above questions which can be shown below as -

4. The motion of a train traveling on a straight track has the velocity versus time graph shown.

(b) During the first 10 seconds of its motion, an acceleration of the train which will be given by -

a = $\Delta$v / $\Delta$t

a = [(14 m/s) - (0 m/s)] / [(10 s) - (0 s)]

a = [(14 m/s) / (10 s)]

a = 1.4 m/s²