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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.


6 years ago

Answers : (1)

neeraj agarwal
34 Points
							

time should b less than the first particle come on ground applying neton second eqn                                                               s=ut+1/2at2                                                                                                                                                                          0=30t-1/2*10*t2                                                                                                                                                         30=5t=>t=6s

6 years ago
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