Problem 10.5 Part A With what minimum speed must you toss a 130 g ball straight

Question

Problem 10.5 Part A With what minimum speed must you toss a 130 g ball straight up to just touch the 15-m-high roof of the gymnasium if you release the ball 1.7 m above the ground? Solve this problem using energy. Express your answer to two significant figures and include the appropriate units Umin = 1 Value Units Submit My Answers Give Urp Part B With what speed does the ball hit the ground? Express your answer to two significant figures and include the appropriate units. | u= 1 Value Units Submit My Answers Give Up Provide Feedback Continue

Explanation / Answer

Part A)

PE = KE

m*g*h = 0.5m*v*2 (mass cancels)

(9.8)*(15 - 1.7) = 0.5*(v2)

v = 16.14 m/s

Part B)

m*g*h = 0.5*m*v2 (mass cancels)

(9.8)*(15) = 0.5*(v2)

v = 17.14 m/s

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