Physics, 09.10.2019 05:10 glowbaby123

Ajet airliner moving initially at 3.00 3 102 mi/h due east enters a region where the wind is blowing 1.00 3 102 mi/h in a direction 30.0° north of east. (a) find the components of the velocity of the jet air- liner relative to the air, svja. (b) find the components of the velocity of the air relative to earth,

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Answer from: gldven7636

a) Vaw = 2.19 mi / h θ = 346.8º b) Vmgx = 0.866 mi / h Vawy = -0.5 mi / h

Explanation:

We using the sum of vectors, we use the indexes ‘a’ for the plane, ‘g’ for the land ‘w’ for the wind,

$v_{ag}$ = $v_{aw}$ + $v_{wg}$

$v_{aw}$ = $v_{ag}$ + $v_{wg}$

To facilitate the calculation we decompose with respect to xy coordinate system

$v_{wgx}$ = $v_{wg}$ cos 30

$v_{wgy}$ = $v_{wg}$ sin30

Vwgx = Vwd cos 30

Vwgx = Vwd sin30

Vmgx = 1.00 cos 30

Vmgx = 0.866 mi / h

Vmgy = 1.00 sin30

Vwgy = 0.5 mi / h

Let's find the resulting components

Vawx = 3.00 -0.866

Vawx = 2,134 mi / h

Vawy = 0 - 0.5

Vawy = -0.5 mi / h

Let's use Pythagoras' theorem

Vaw2 = Vawx2 + Vawy2

Vaw = Ra Vawx2 + Vawy2

Vaw = ra 2,134 2 + 0.52

Vaw = 2.19 mi / h

Answer from: Quest

distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

slope of a graph = change in value of y -axis / change in values of x -axis

comparing both the equations

change in value of y -axis = change in position

change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

Answer from: Quest

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction

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Ajet airliner moving initially at 3.00 3 102 mi/h due east enters a region where the wind is blowing...

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