Physics, 23.10.2019 16:50, Kennedy3449
Gon a one-mile circular automobile race track, 30 drivers are each instructed to drive one lap (i. e., one mile) at 60 mph, the next lap at 90 mph, and then continue to alternate between lap speeds of 60 and 90 mph for a very long period of time. to visualize this system, you might imagine that the cars are inserted onto the race track in such a way that cars in each speed class maintain nearly uniform spacings over the track. determine
Answers: 3
Physics, 22.06.2019 00:00, tsupreme
1134567 a jet with mass m = 1.1 Δβ 105 kg jet accelerates down the runway for takeoff at 2 m/s2. 1) what is the net horizontal force on the airplane as it accelerates for takeoff? 2.2*10^5 n your submissions: 2.2*10^5 computed value: 220000submitted: saturday, january 26 at 2: 41 pm feedback: correct! 2) what is the net vertical force on the airplane as it accelerates for takeoff? 0 n your submissions: 0 computed value: 0submitted: saturday, january 26 at 2: 41 pm feedback: correct! 3) once off the ground, the plane climbs upward for 20 seconds. during this time, the vertical speed increases from zero to 21 m/s, while the horizontal speed increases from 80 m/s to 95 m/s. what is the net horizontal force on the airplane as it climbs upward? n 4) what is the net vertical force on the airplane as it climbs upward? n 5) after reaching cruising altitude, the plane levels off, keeping the horizontal speed constant, but smoothly reducing the vertical speed to zero, in 13 seconds. what is the net horizontal force on the airplane as it levels off? n 6) what is the net vertical force on the airplane as it levels off?
Answers: 1
Physics, 22.06.2019 04:00, alexialoredo625
When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative
Answers: 2
Gon a one-mile circular automobile race track, 30 drivers are each instructed to drive one lap (i. e...
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