9. The system can be considered 1 because The statement above is best completed by the answers in row: Row I 11 elastic the total kinetic energy remains constant for the entire decay process. elastic net force on the system remains zero during the entire decay process. isolated net force on the system remains zero during the entire decay process. isolated the total kinetic energy remains constant for the entire decay process. 0

Given the vectors i =(- 3, 7, 4] and y = [- 6, 0, 8], determine b) proj „ . a) The angle between i and ỹ

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Evaluate the following: a) [P., A] where A =(P + P3 + P2) 2m

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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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help with questions 55,56,57,58,59,60,61,62,and 63

If the speed of the skateboarder at point A is v= 1.2 m/s, what is her speed at point B? Assume that friction is negligible. Express your answer using appropriate units. V Templates Symbols undo redo reset keyboard shortcuts help L Value Units

WORK, ENERGY POWER P CA 0.2793 kg rocket in a fireworks display is launched from rest and follows an erratic flight path to reach the point P. Point P is 29 m above the starting point. In the process, 400 J of work is done on the rocket by the nonconservative force generated by the burning propellant. Ignoring air resistance and the mass lost due 29 m he Vo = 0 m/s to the burning propellant, find the speed vf of the rocket at the point P. ho