Question

Ina tennis match a player wins a point by hitting the 0.059-kg ball sharply to the ground on the opponent's side of the net. If the ball bounces upward from the ground with a speed of 16 m/s and is caught by a fan in the stands when it has a speed of 12 m/s, how high above the court is the fan? Ignore air resistance.

Answer 1

Answer:

Ina tennis match a player wins a point by hitting the 9.059_kg sharply to the ground on the opponent side of the net. if the ball bounces upward from the ground with a speed

Answer 2

Explanation:

Given Ina tennis match a player wins a point by hitting the 0.059-kg ball sharply to the ground on the opponent's side of the net. If the ball bounces upward from the ground with a speed of 16 m/s and is caught by a fan in the stands when it has a speed of 12 m/s, how high above the court is the fan? Ignore air resistance.

• Ball bounces upward and gets caught in the stand. So we have
• Kinetic energy at the bottom + potential energy at bottom = kinetic energy at the stands + potential energy at stands.
• So ½ mv^2 + 0 = ½ mv^2 + mgh
• So ½ m x 16^2 + 0 = ½ m x 12^2 + mgh
• So 128 m = ½ m (144 + gh)
•     128 = 72 + gh
•         gh = 128 – 72
•        h = 56 / g
•   Or h = 56 / 10
• Or h = 5.6 mtrs

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https://brainly.in/question/21400878