Answer :
We can calculate by using conservation of energy the speed of ball is √ks² / m - 2 gy.
What is conservation of energy?
Conservation of energy is defined as a physics principle that states that in a closed system, the energy of interacting things or particles stays constant. Energy cannot be created or destroyed, according to the law of conservation of energy.
According to law of conservation of energy
1/2 ks² + mgH = mg(H + y) + 1/2 mv²
On solving v
1/2 mv² = 1/2 ks² + mgH - mg(H + y)
1/2 mv² = 1/2 ks² + mgy
v² = ks² / m - 2gy
v = √ks² / m - 2 gy
Thus, we can calculate by using conservation of energy the speed of ball is √ks² / m - 2 gy.
To learn more about conservation of energy, refer to the link below:
https://brainly.com/question/2137260
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