a car of mass 560 kg is moving with a velocity of 50m/s the velocity time graph drawn for the motion of this car is a horizontal line parallel to the time axis the time in whichthe velocity of the object will be doubled is
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Explanation:
Answer:
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Given:-
A boy of mass 60kg running at 3 m/s jumps on a trolley of mass 140kg moving with the velocity of 1.5m/s in the same direction .
To prove :-
With what velocity will the two moves together.
Explanation :-
First here we should calculate combined velocity .
Therefore, here combined mass of the given system
which is 60kg+140kg=200kg
Now , here we should use momentum formula,
that is ,
m1u1+m2u2=m1v1+m2v2
m1u1+m2u2=mv(mv is the combined mass of the system)
(60×3)+ (140×1.5)=200×v.
180+210=200×v
390= 200×v
390/200=v
v=1.95 m/s.
Therefore, at 1.95m/s the velocity moves together.
Hope it helps u mate.
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