-- more mass involved
-- less distance between the two objects
When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges. Like charges repel, and unlike charges attract.
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Answer: 31.85 m/s
Explanation:
Since we are talking about constant acceleration, we can use the following equation to find the speed 
of the rocket:
Where:
is the distance the rocket has traveled
is the time in which the rocket has traveled the distance 
Solving the equation with the given data:
This is the rocket's speed
The centre of mass of the objects is (0,1)m .
What do you mean by Centre of mass?
The centre of mass is a position defined relative to an object or system of objects .
We have given
m1=2kg , y1= 3
m2= 3kg ,y2=2.5m
m3=2.5kg ,y3= 0m
m4=4kg , y4= -0.5m
Ycm=mixi/mi
→2×3+3×2.5+2.5×0+4×0.5/4.5
→1m
Centre of mass of these object is at (0,1)m .
to learn more about centre of mass click herehttps://brainly.com/question/19426784
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