In a classroom demonstration, an instructor tosses her keys Westward and slightl
ID: 2125516 • Letter: I
Question
In a classroom demonstration, an instructor tosses her keys Westward and slightly Upward. A set of motion sensors, attached to a computer, is used to record the position of the keys with respect to a mark on the floor at the instructor's feet. Six positions are recorded, in meters; there are 0.2 of a second between each data point. You are given the computer output in the table below; the direction of each horizontal position is West, and the direction of each vertical position is Up (i.e. above the floor).
Finally, let's see if you've understood what you have done. For the motion of the keys, AND FOR EQUAL INTERVALS OF TIME, which of the following are constant. You must correctly select all quantities which are constant. Note that one way for a quantity to be constant is for it always to be zero.
Key Toss Tracking Time Horizontal Position Vertical Position (s) (m) (m) 0.0 0.6 2.2 0.2 1.5 2.744 0.4 2.4 2.896 0.6 3.3 2.656 0.8 4.2 2.024 1.0 5.1 1Explanation / Answer
0.2 -0.4 second interval
If highest point is in 0.4 to 0.6 secont interval then vertical position at 0.6 second should be higher thenvertical position at 0.2 second .... which is not .
so highest point has to come in 0.2 to 0.4 second interval .