(A) Elastic collision
(B) In-elastic collision
(C) Inertial collision
(D) None of the above
In case of elastic collision between two bodies?
(A) Energy is conserved but momentum is not.
(B) Momentum is conserved but energy is not.
(C) Both momentum and energy are conserved.
(D) Both momentum and energy are not conserved.
As the rocket moves upward during its job. Its acceleration goes on?
(A) Decreasing
(B) Increasing
(C) Remains same
(D) It moves with uniform velocity
Rocket equation is given as?
(A) a=M/mv
(B) a=Mv/m
(C) a=mv/M
(D) a=m/Mv
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