Center of MassHard
Question
A block moving in air explodes in two parts then just after explosion (neglect change in momentum duet to gravity)
Options
A.the total momentum of two parts must be same to the momentum of the block before explosion.
B.the total kinetic energy of two parts must be same as that of block before explosion.
C.the total momentum must change
D.the total kinetic energy must increase
More Center of Mass Questions
A shell of mass 100 kg is fired horizontally from a cannon with a mass of 5 × 103 kg. The kinetic energy of the she...Two bulbs B1 & B2 each having resistance 50Ω are connected according to the figure. Which bulb will glow with more ...Two particles of equal mass have initial velocities 2î ms-1 and 2ĵ ms-1. First particle has a constant acceler...Two wires of same metal have the same length but their cross sections are Anthe ratio 3 : 1. They are joined in series. ...A train of mass M is moving on a circular track of radius ′R′ with constant speed V. The length of the train...