A hot-air balloon is descending at a rate of 2.2 m/s when a passenger drops a camera. Part A If the camera is 43 m above the ground when it is dropped, how much time does it take for the camera to reach the ground? Express your answer using two significant figures. ? t = |2.9 Submit Previous Answers Request Answer

Part A A motorcycle moves according to the velocity-versus-time graph shown in the figure(Figure 1). Find the average acceleration of the motorcycle during segment A of the motion. Express your answer using two significant figures. ? m/s Submit Request Answer Part B Find the average acceleration of the motorcycle during segment B of the motion. Express your answer using two significant figures. ap = m/s? Submit Request Answer Figure 1 of 1 Part C 15 Find the average acceleration of the motorcycle during segment C of the motion. 10 Express your answer using two significant figures. A 5 ac = m/s? 5 10 15 20 25 Time, t (s) Submit Reauest Answer s/w) a 'Ápoja

A coin that is tossed straight up into the air. After it is released, it moves upward, reaches its highest point and falls back down again. Use one of the following choices (A through G) to indicate the acceleration of the coin during each of the stages of the coin's motion described below. Take up to be the positive direction. Answer choice J if you think that none is correct. A. The acceleration is in the negative direction and constant. B. The acceleration is in the negative direction and increasing. C. The acceleration is in the negative direction and decreasing. D. The acceleration is zero. E. The acceleration is in the positive direction and constant. F. The acceleration is in the positive direction and increasing. G. The acceleration is in the positive direction and decreasing. The coin is mo downward. OE OF OJ O C O A OD OG O B

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To find the height of an overhead power line, you throw a ball straight upward. The ball passes the line on the way up after 0.75 s , and passes it again on the way down 1.5 s after it was tossed. Part A What is the height of the power line? Express your answer using two significant figures. h = Submit Request Answer Part B What is the initial speed of the ball? Express your answer using two significant figures. ? vo = Value Units Submit Request Answer

A747 airliner reaches its takeoff speed of 158 mi/h in 35.1 s. Part A What is the magnitude of its average acceleration? m/s? dav = Submit Request Answer