only need help me from p-s only need help me from p-s only need help me from p-s
ID: 2125439 • Letter: O
Question
only need help me from p-s
only need help me from p-s
only need help me from p-s
only need help me from p-s
only need help me from p-s
only need help me from p-s
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).
Explanation / Answer
p)
= 1.96 m/s<--------------answer
direction = atan(((2.896-2.744)-(2.744-2.2))/((2.4-1.5)-(1.5-0.6)))
= -90 degrees <------------------answer
q)
change in velocity = sqrt(((2.656-2.896)-(2.896-2.744))^2+((3.3-2.4)-(2.4-2.5))^2)/0.2
= 5.37 m/s <--------------answer
direction = atan(((2.656-2.896)-(2.896-2.744))/((3.3-2.4)-(2.4-2.5)))
= -21.4 degrees <-----------answer
r)
change in velocity = sqrt(((2.204-2.656)-(2.656-2.896))^2+((4.2-3.3)-(3.3-2.4)))/0.2
= 1.06 m/s <-------------answer
direction = atan(((2.204-2.656)-(2.656-2.896))/((4.2-3.3)-(3.3-2.4)))
= -90 degrees <-----------------answer
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