When you have a good graph, print it by clicking on the printer icon. Click the

Question

When you have a good graph, print it by clicking on the printer icon. Click the "Ok" button and print a copy for each member in your group. Label your printout "Prediction 6A results" and when lab is affix it below using your arts and crafts skills. In the velocity-time graph, what tells you that a moving object has changed direction? In the position-time graph, what tells you that a moving object has changed direction? In the velocity-time graph, what tells you that an object is moving with a constant velocity? In the position-time graph, what tells you that an object is moving with a constant velocity? Sketch the position-time graph for a person initially walking toward the motion detector at a steady pace and then away from it at a steady pace.

Explanation / Answer

(6.1) In a velocity time graph, the object changes direction when the plot intersects the velocity axis at a certain time t.

(6.2) In a position time graph, the object changes direction when the plot goes from having a positive slope to a negative slope or vice versa.

(6.3) In a velocity time graph, if the plot is parallel to the time axis, then the object is moving with constant velocity.

(6.4) A constant slope in a position time graph implies constant velocity motion.

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