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Two particles are thrown vertically upwards along the same line with the same initial velocity u = 30 m/s, but at different times. The second particle is thrown t seconds after the first. What should be the minimum value of t so that the particles collide in mid-air? Neglect air resistance. Express your answer in MKS or SI system of units.


Two particles are thrown vertically upwards along the same line


with the same initial velocity u = 30 m/s, but at different times.


The second particle is thrown t seconds after the first. What should


be the minimum value of t so that the particles collide in mid-air?


Neglect air resistance. Express your answer in MKS or SI system


of units.


Grade:11

1 Answers

anil kumar
38 Points
10 years ago

I guess the question has to be Maximum time!!!! If it is maximum then ans would be 6 secs coz if after 6 secs second one is thrown the first would already complete its flight and thus there is no chance of collision if it is thrown less than 6 seconds then second one would always collide coz they r thrown in same line

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