In a classroom demonstration, an instructor tosses her keys Westward and slightl
ID: 2160536 • 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).
1
2
0.2
1.92
2.444
0.4
2.84
2.496
0.6
3.76
2.156
0.8
4.68
1.424
1.0
5.6
0.3
Explanation / Answer
please rate as lifesaver first and if any questions then ask in comments and i will answer them a)1.92-1/0.2 = 4.6 m/s b)2.444-2/0.2 = 2.22 m/s c)2.84-1.92/0.2 = 4.6 m/s d)2.496-2.444/0.2 = 0.26 m/s e)no question f)2.156-2.496/0.2 = -1.7 m/s g)no question h)1.424-2.156/0.2 = -3.66 m/s i)no question j)0.3-1.424/0.2 = -5.62 m/s