An airplane has an air speed of 126 m/s and flies due North, but the wind is to the East at 56 m/s. What is its actual ground speed (in m/s)?
2007-11-23 02:48:25 · 3 answers · asked by molly 1 in Science & Mathematics ➔ Physics
The components of the airplane's ground speed are
126 m/s N
56 m/s E
The ground speed is sqrt ( 126 ^ 2 + 56 ^ 2 )
The angle is inv-tan (56 / 126 ) E of N
2007-11-23 02:56:48 · answer #1 · answered by jgoulden 7 · 1⤊ 0⤋
Average speed = Distance travelled divided by the time taken.
Distance= 126
Time =56
2007-11-23 11:14:48 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Va=126m/s (speed of plane)
Vw = 56m/s (speed of wind)
Vr = ? m/s ( speed of plane, ground speed)
so by pythgorean triangle
Va^2 +Vw^2=Vr^2
126^2 + 56^2=Vr^2
the add these two numbers (sorry i dont hav the calculator)
and take the square root of the sum
and the answer is your ground speed
2007-11-23 11:07:08 · answer #3 · answered by sylar 2 · 0⤊ 0⤋