) Homework Chapter 9; c, x y \'A Chapter 07 l www.wo bassign net/web Student Ass
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) Homework Chapter 9; c, x y 'A Chapter 07 l www.wo bassign net/web Student Assignment. Responses/subntideplasa ? Not secure -) start paase resetdlear Display in a New Window Solve this for the ball's final speed v. (Use any variable or symbol stated above along with the following as necessary: g.) Let h - 25.5 m and v, 11.5 m/s. Find the speed of the ball just before it hits the ground. m/s Find the ball's mechanical energy at the release point. Find the ball's mechanical energy just before it hits the ground. Remarks velocity.Explanation / Answer
m*vi^2/2 + mgh = mvf^2/2
divide by (m/2)
vi^2 + 2gh = vf^2
vf = sqrt (vi^2 + 2gh)
Part B
vf = sqrt (11.5^2 + 2*9.81*25.5)
vf = 25.15 m/sec
Part C
KEi + PEi = mvi^2/2 + mgh
= m*(11.5^2/2 + 9.81*25.5)
= 316.28*m J
Part D
KEf + PEf = mvf^2/2 + 0
= m*25.15^2/2
= 316.26*m J
Provide the value of 'm' and I will calculate it further.
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