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A baill is thrown vertically upwards with an initial velocity of 18.80ms, from the ground. How long is the ball in the air? (Neglect air resistance) Answert 12.[pt] What is the greatest height reached by the ball Answer: 13.(1ptl Cakulate the time at which the ascending ball reaches a height of 12.8 m above the ground Answer: Arswers Anwers 14.(tpt A rocket,initially at rest on the ground, accelerates straight upward with a constant acceleration of $3.0 m2, unil the fuel is used up after 680s.What is the speed of the recket at that momen (Neglest air resistance Answert 15.11pt hom the time the uel runs out, how long does it take for the rocket to reach its maximum height? (Use 8-98 m Answer: 6.Ipt What is the speed of the rocket when iat hits the ground? Answer and Al Arwer
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