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i dont know the answer but it is not d
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In a one dimensional collison between two identical particles A and B , B is stationery and A has momentum p before impact . during the impact , B gives Impulse J to A
a)the total momentukm of a plus B system is p before and after the impact and p -J during the impact
b)the coefficient of restitution is 2J/p -1
c)thecoefficient of restitution is J/p -1
d)during the impact A gives impulse J to B
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A man of mass m stands on a long flat car of mass M, moving with velocity V . IF he now begins to run with a velocity u with respect to the car , in the same direction as V , the velocity of the car will be
a)V - mu/M
b)V - mu/(m+M)
c)V + mu/(m+M)
d)none
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A n insect of mass m is initially at one end of stick of length L and mass M , which is at rest on a smooth floorr . the coefficient of friction between the insect and the stick is k. the minimum time inwhich the insect can reach the other w=end of the stick is t . then t2 is
a)2L/kg
b)2Lm/kg(M+m)
c)2LM/kg(M+m)
d)2Lm/kg/M
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karthik can u answer this one please
i am getting the answer 20root2 but i m not sure
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if m/M is < 1 then how t>T
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please explain what is Mx =mL
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sorry guys
acceleration of train is 0.5m/s2
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a train of length 200m switches on its head light when it starts moving with an acceleration of 05 . some time later its tail light is switched on . an observer on the ground notices that the two events occur at the same place . the time intervel between the 2 events is
a)10 root2 sec
b)20sec
c)20root2sec
d)40 sec
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so the answer is t >T ?
if yes u are right i have rated u
can u explain what is Mx =mL
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a strip of wood of length L is placed on smooth horizontal surface . an insect starts from one end of the strip , walks with constant veloity and reaches the other end in time T . it then flies off vertically . the strip moves a further distance L in time t
a)T = t
b)t < T
c)t>T
d)depending on the massesd of the insect and the strip
give solution
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mine is 37751
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