At a particular instant, a hot air balloon is 100 m in the air and descending at a constant speed of 2.0 m/s. At this exact instant, a girl throws a ball horizontally, relative to herself, with an initial speed of 19 m/s. When she lands, where will she find the ball? Ignore air resistance. Ax :
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- A rock is thrown off a vertical cliff at an angle of 44.5o above horizontal. The cliff is 75.7 m high and the ground extends horizontally from the base. The initial speed of the rock is 18.4 m/s. Neglect air resistance. E: How high above the ground, in meters, is the rock 2.42 s before it hits the ground? F: How far horizontally from the cliff, in meters, is the rock 2.42 s before it hits the ground?A roofer tosses a small tool to the ground. What minimum magnitude vo of horizontal velocity is required to just miss the roof corner B? Also determine the distance d. B Answers: Vo = d = i i -2.4 m 10 LEFTHERI d T 1.3 m 0.9 m 3.8 m m/s 3W X P 1. A rescue plane wants to drop supplies 280 m below. If the plane is travelling at a speed of 75.0 m/s, what is the magnitude of the velocity of the supply when it lands? m/s 3 2. At a track and field meet, the best long jump is measured as 8.50 m. The jumper took off at an angle of 38.0° to the E D SO C $ 4 R F % 5 V T G 6 MacBook Air B Y & H 7 F? U N 8 J DII ( 9 M 4 K F9 O L H P In command I optic
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