Rocket theory
Consider two particles in a rocket which is having acceleration as shown. Find the time in which both particles collide with each other? The distance between is 40 m as shown
Assumptions
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Rocket is in gravity free space.
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Length of the rocket is very large so no case of particles hitting the walls.
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Rocket has no initial velocity.
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No friction or air resistance is present.
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1 solution
Use relative motion don't consider rocket hence 40/5 =8sec.