Physics · MOTION IN A STRAIGHT LINE

A ball is dropped from a height of \( 90\text{ m} \) on a horizontal floor. At each collision with the floor, the ball loses one tenth (\( 1/10 \)) of its speed. What is the maximum height reached by the ball after its second collision with the floor? (Take \( g = 9.8\text{ m s}^{-2} \))

1. A
   \( 72.90\text{ m} \)
2. B
   \( 65.61\text{ m} \)
3. C
   \( 52.40\text{ m} \)
4. D
   \( 59.05\text{ m} \)