Hey this is me again with another post on kinematics. This week I'm talking about tossing objects in the air. This has to do with velocity and acceleration. My friend (who I shall not name), is tossing a Gatorade bottle in the air, and then caught it. We did a similar exercise with a ball for a lab this past week. Anyways, when you toss an object in the air, the object would have the same velocity going down, but would go in the negative direction. So, for example, if he throws the bottle in the air at a velocity 9 m/s, then the bottle will drop at the same velocity, but in the negative direction. Therefore, the bottle will drop -9 m/s. One more thing. If when dealing with velocity, when the object is thrown up and then drops back down, the speed goes fast, slow, stop, slow, then fast. So when graphed on a distance vs. time graph, it will show up as a parabolic shape. And when graphed on the velocity vs. time graph, it will show up as a kind of diagonal line going in the negative direction. This is because when the object is going up, it will go fast, then slow, then stop, so when it stops, it will hit the zero line on the graph. Then, when the object is dropping, then the object will start to accelerate again but this time the line will go stop, then slow, then fast. So it basically when in a straight line. So there you have it, velocity/acceleration in a nutshell.
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