A jet plane is flying at a constant altitude. At time it has components of veloc

Question

A jet plane is flying at a constant altitude. At time it has components of velocity vx= 86 , vy=112 . At time t2=26.5 the components are vx=165 , vy=37 .

1-For this time interval calculate the average acceleration.
Give your answer as a pair of components separated by a comma. For example, if you think the x component is 3 and the y component is 4, then you should enter 3,4. Express your answer using two significant figures.

2-Find the magnitude of the average acceleration.
Express your answer using two significant figures.

3-Find the direction of the average acceleration (let the direction be the angle that the vector makes with the +x-axis, measured counterclockwise).

Explanation / Answer

avg acceleration =[(165-86)i +(37-112)j ]/26.5
=2.98i -2.83j
magnitude =4.11 m/sec^2
tan =-2.83/2.98

= -43.54

ie 180-43.54 =136.46 with +ve x axis

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