A plane is headed due west with an air speed of 223 m/s. The wind blows south at 21.0 m/s. Find the velocity of the plane relative to the earth.

a plane is headed

Explanation: due west with an air

So first off, I would draw a picture of your vectors. I would draw the plan heading west (to the right) as a horizontal line with a magnitude of 224m/s. Then I would draw a vertical line downwards to represent the wind blowing south at 15.5m/s. If you put those together, you get a right angle. To make a triangle, draw the hypotenuse and now you have the vector representation of the velocity of the plane relative to the earth. To find the magnitude, use the Pythagorean theorem to find the hypotenuse.

a2 = b2 + c2

velocity of the plane 2 = (224m/s)2 + (15.5m/s)2

velocity of the plane 2 = 50,176 + 240.25 = 50,416.25

square root both sides

velocity of the plane = (50,416.25)1/2 = 224.54m/s with direction: a little bit south of west

Explanation:

it takes about 30 days for it to break down

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg