Question 70 of 130
Two identical particles move towards each other with velocity and respectively. The velocity of centre of mass is
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Answer: (C) v/2
Conserving Linear Momentum
Center of Mass, Momentum & Collision
JEE Main level, single correct, medium
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More Physics practice
- Center of Mass, Momentum & CollisionThe position of an object having mass kg as a function of time is given as m. At s, which of the following statements are correct?
A. The linear momentum kg·m/s.
B. The force acting on the object N.
C. The angular momentum of the object about its origin J·s.
D. The torque acting on the object about its origin N·m.
Choose the correct answer from the options given below : - Center of Mass, Momentum & CollisionA body of mass 14 kg initially at rest explodes and breaks into three fragments of masses in the ratio . The two pieces of equal masses fly off perpendicular to each other with a speed of each. The velocity of the heavier fragment is .
- Center of Mass, Momentum & CollisionGiven below are two statements :
Statement I: For a mechanical system of many particles total kinetic energy is the sum of kinetic energies of all the particles.
Statement II: The total kinetic energy can be the sum of kinetic energy of the center of mass w.r.t to the origin and the kinetic energy of all the particles w.r.t. the center of mass as the reference.
In the light of the above statements, choose the correct answer from the options given below : - Center of Mass, Momentum & Collision
Consider two blocks A and B of masses and that are placed on a frictionless table. The block A moves with a constant speed towards the block B kept at rest. A spring with spring constant is attached with the block B as shown in the figure. After the collision, suppose that the blocks A and B, along with the spring in constant compression state, move together, then the compression in the spring is, (Neglect the mass of the spring) - Center of Mass, Momentum & CollisionThree bodies A, B and C have equal kinetic energies and their masses are . and respectively. The ratio of their linear momenta is :
- Center of Mass, Momentum & CollisionWhen kinetic energy of a body becomes 36 times of its original value, the percentage increase in the momentum of the body will be:
JEE Main Physics practice question on Center of Mass, Momentum & Collision (Motion of centre of mass), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.