Alead ball is dropped in a lake from a diving board 5.20 m above the water. it hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. it reaches the bottom 4.80 s after it is dropped. (a) how deep is the lake? what are the (b) magnitude and (c) direction (up or down) of the average velocity of the ball for the entire fall? suppose that all the water is drained from the lake. the ball is now thrown from the diving board so that it again reaches the bottom in 4.80 s. what are the (d) magnitude and (e) direction of the initial velocity of the ball?
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1134567 a jet with mass m = 1.1 ă— 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?
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Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt
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A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?
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Alead ball is dropped in a lake from a diving board 5.20 m above the water. it hits the water with a...
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