(A) a=M/mv
(B) a=Mv/m
(C) a=mv/M
(D) a=m/Mv
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A bomb of mass 12 kg initially at rest explodes into two pieces of masses 4 kg and 8 kg. The speed of the 8 kg mass is 6 m/s. The kinetic energy of the 4 kg mass is?
(A) 32 J
(B) 48 J
(C) 114 J
(D) 288 J
Bomb shell explodes into four equal parts. Which of the following is conserved?
(A) Kinetic energy
(B) Linear memontum
(C) Linear momentum and Total energy
(D) Neither linear momentum nor total energy
Bullet is fired by a gun. The gun moves backward with a?
(A) Velocity greater than that of bullet
(B) Fraction of velocity of bullet
(C) Velocity equal to that of bullet
(D) None of the above
A typical rocket consume about 10000 kg/s of fuel and eject burn gases at speed?
(A) 4000 m/s
(B) 5000 m/s
(C) 3000 m/s
(D) 2000 m/s
Mass of fuel consumed by a typical rocket to overcome earth gravity is?
(A) 10 kgs-1
(B) 100 kgs-1
(C) 1000 kgs-1
(D) 10000 kgs-1
When 2 capacitors of same capacitance are connected in parallel and then in service. Capacitance in these two cases are in ratio of?
(A) 4 : 1
(B) 6 : 1
(C) 1 : 4
(D) 1 : 2
Which among the following is a vector quantity?
(A) Displacement
(B) Distance
(C) Speed
(D) Mass