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1. I this problem, assume that the positive y direction points up and that y 0 at the ground. For a ball in (i) Draw a free body diagram, showing all of the forces acting on the ball, and find an expression for the acceleration of the ball. (i) Determine whether the position of the ball is positive, negative, or zero. (iii) Determine whether the velocity of the ball is positive, negative, or zero. (iv) Determine whether the acceleration of the ball is positive, negative, or zero (a) (b) yet reached its maximum height. The ball is dropped from rest from a height H. It has already been released but has not yet hit the ground. The ball is thrown upward from the ground with initial speed vo. It has already been released but has not Acti Go to(c) The ball is thrown upward from the ground with initial speed vo It has been moving upward, but at this (d) The ball is thrown upward from the ground with initial speed vo It has already reached its maximum height but has not yet hit the ground. (e) What do you notice about your free body diagrams and accelerations in parts (a) - (d)?

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Solution:- The bel is dropped from Resl from Heig t ve Mq (Force due to qavi Ctリ round positon ball is potitive iiリvelea bau s ahre begane it is mov I n downwad direction b) eal is to upwar with ini tal velocity v rm ce due to qbavi vr cij Position o prHe le Prsitive, it is above t4c ground upwand ireet/oo acelesHito is dna twC) C) ών pasition e, nu is positive , above 9round Cİìリveloci above groud ) ball at top 따 point s zero . Cíf itis approaching downward thaり velocity s Neqati e . ) сリ P63 ition is positin Cabove ground e丿») all the-four cages only one tor ce oo -the ball ; s acti downnand towards centre의 earやSo acc election 1s Neqative

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