NDA 2024 Physics question
A ball of 0·1 kg mass is dropped on a hard floor from a height of 0·45 m and rises to a height of 0·20 m. If it was in touch with the floor for 0·1 s, the net force it applied on the floor while bouncing is : (take the gravitational acceleration )
Answer: (D)
Solution
Speed just before impact (downward); speed just after \sqrt${2 × 10 ×
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