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Question: A ball leaves a horizontal table with velocity v<sub>0</sub> = 5 m/s. The ball bounces elastically f...

A ball leaves a horizontal table with velocity v0 = 5 m/s. The ball bounces elastically from a vertical wall at a horizontal distance D (= 8m) from the table, as shown in figure. The ball then strikes the floor a distance x0 from the table (g = 10 m/s2). The value of x0 is –

A

6 m

B

4 m

C

5 m

D

7 m

Answer

6 m

Explanation

Solution

x = vt = 52×2010\sqrt{\frac{2 \times 20}{10}} = 10m

x0 = 8 – 2 = 6m