Physics, 14.09.2019 10:30 jokerr6323
Aplane is heading due north: its nose points towards the north direction, but its trajectory on the ground deviates from the north direction due to a sideways component of the wind. the plane is also climbing at the rate of 120 km/h (height increase per unit time). if the plane's airspeed is 470 km/h and there is a wind blowing 80 km/h to the northwest, what is the ground speed of the plane? use v to denote the plane's speed vector with respect to earth (i. e., the 3d velocity vector measured by the control tower's radars), vair to denote the air speed vector (i. e. the speed with respect to air measured by the pilots), and w to denote the wind speed vector. start by writing a relationship between these three velocity vectors, and write their components (known and unknown). use the available information to determine the unknowns. assume that the x axis is oriented toward the east, the y axis is oriented toward the north, and the z axis is vertical, oriented toward the sky. hints: the ground velocity vector is the projection onto the earth's surface of the plane's velocity vector v. you can picture the problem as a plane moving within an air volume, that is itself in translation with respect to earth because of the wind. once you have determined all the unknowns, enter the components of the vectors w, vair. and v within angle brackets typset with 'and> , using exact values or 4 decimal place accuracy: t w vair ground speed enter your answ er as a number (not a vector), using exact values or at least 4 decimal place accuracy.
Answers: 2
Physics, 22.06.2019 09:40
When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.
Answers: 1
Physics, 22.06.2019 10:00
The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.
Answers: 3
Aplane is heading due north: its nose points towards the north direction, but its trajectory on the...
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