Chen Jia Hao
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Two bodies of masses of 1 kg and 3 kg initially at rest are moving with velocities 30 m/s and 10 m/s towards each other due to mutual force of attraction. What is the velocity of the centre of mass of system?
In inelastic one dimensional collision, the colliding masses stick together and move in the same direction at same speeds. The momentum is conserved and Kinetic energy is changed to different forms of energies. For inelastic collisions the equation for conservation of momentum is : m1u1 + m2u2 = (m1 + m2) v.
The central body (2) is initially at rest and bodies 1 and 3 are at a distance L and 2L from the central body respectively. Bodies 1 and 3 move towards body 2 with speeds v 0 each. The collision between 1 and 2 is perfectly elastic and the collision between body 2 and 3 is perfectly inelastic.
A: In an elastic collision, if a body suffers a head on collision with another of same mass at rest, the first body comes to rest while the other starts moving with the velocity of the first one. B : Two bodies of equal masses suffering a head-on elastic collision merely exchanges their velocities.
Two bodies, A and B initially, at rest, move towards each other under mutual force of attraction. At the instant when the speed of A is v and that of B is 2 v, the speed of the center of mass of the bodies is. 1.5 v; 3 v; 2 v; Zero
If a body moving towards a finite body at rest collides with it then momentum will be conserved and hence, the velocities after collision are may be in inverse proportion to their masses or may get interchanged. Hence, both the bodies move after collision or the moving body comes to rest and stationary body starts moving.
According to work-energy theorem, Change in KE is equal to work done by all the forces acting on the body. Let us assume that only one force (retarding force) is acting on the body, therefore, KE of the body = Work done by retarding force KE of the body = Retarding force x Displacement As KE of the bodies and retarding forces applied on them are same, therefore, both bodies will travel equal ...
A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time t is proportional to (i) t⅟² (ii) t (iii) t³/² (iv) t²
A body moving towards a body of finite mass at rest collides with it. It is possible that : the stationary body remains stationary and the moving body rebounds; both bodies come to rest; both bodies move after collision; the moving body stops and the body at rest starts moving
Two bodies of masses m 1 and m 2 are initially at rest at infinite distance apart. They are then allowed to move towards each other under mutual gravitational attraction. Their relative velocity of approach at a separation distance r between them is
