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Grade: 12th pass

                        

A Man throws balls with the same speed vertically upwards one after the other at an interval of 2 second . What should be the speed of the throw so that more than two balls are in the sky at any time ( Given g 9.8 m/s^2 ) 1. More than 19.6 m/s 2. At least 9.8 m/s 3. Any speed less than 19.6 m/s 4. Only with speed 19.6 m/s

2 years ago

Answers : (1)

Rahul Rathore
15 Points
							
More than 19.6 m/s
Two balls should be in Air ,we can consider that at t=2 1st ball will be at max height v=0 
Applying the eq  we get answer more than 19.6m/s
2 years ago
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