just need part p to s just need part p to s just need part p to s just need part
ID: 2125507 • Letter: J
Question
just need part p to s
just need part p to s
just need part p to s
just need part p to s
just need part p to s
just need part p to s
just need part p to s
just need part p to s
just need part p to s
just need part p to s
just need part p to s
the answers on p to s is correct
the answers on p to s is correct
the answers on p to s is correct
the answers on p to s is correct
the answers on p to s is correct
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)
velocity at 0.3 = avg velocity between 0.2 and 0.4 s =4.563 m/s
similarly , velocity at 0.1 = sqrt((1.5-0.6)^2+(2.744-2.2)^2)/(0.2-0) = 5.258 m/s
So,change in velocity = 4.563-5.258 = -0.695 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)
velocity at 0.3 = 4.563 m/s
velocity at 0.5 = sqrt((2.656-2.896)^2+(3.3-2.4)^2)/0.2 = 4.657 m/s
So, change in velocity = 4.657-4.563 = 0.094 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)
vel at 0.5 = sqrt((2.656-2.896)^2+(3.3-2.4)^2)/0.2 = 4.657m/s
vel at 0.7 = sqrt((2.204-2.656)^2+(4.2-3.3)^2)/0.2 = 5.036 m/s
So, change in velocity = 5.036-4.657 = 0.379 m/s <-------------answer
direction = atan(((2.204-2.656)-(2.656-2.896))/((4.2-3.3)-(3.3-2.4)))
= -90 degrees <-----------------answer
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.