Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

Olympiad workbookNSEPRotational Motion

Two bodies of equal masses moving with equal speeds make a perfectly inelastic collision. If the speed after the collision is reduced to half, the angle between their velocities of approach is

Options

A30^
B60^
C90^
D120^

Correct answer

D. 120^

Step-by-step solution

No Solution

Practice Rotational Motion on Quantrex Academy →

More from Rotational Motion

A sphere of radius R made up of Styrofoam (light polystyrene material) has a cavity of radius R / 2 . The centre of the cavity is situated at a distance of R / 2 from the centre of A ball A of mass 1 kg moving at a speed of 5 ~m / s strikes tangentially another ball B initially at rest. The ball A then moves at right angles to its initial direction at a speed Consider two point masses m₁ and m₂ connected by a light rigid rod of length r₀ . The moment of inertia of the system about an axis passing through their centre of mass and perpend Two point masses m₁ and m₂ are connected at the ends of a light rigid rod of length l . The moment of inertia of the system about an axis through their centre of mass and perpendic A particle at rest explodes into two fragments of masses m₁ and m₂ (m₁>m₂ ) which move apart with nonzero velocities. If ₁ and ₂ are their de Broglie wavelengths respectively, then A ball of mass m hits directly another ball of mass M at rest and is brought to rest by the impact. One third of the kinetic energy of the ball is lost due to the collision. The co Two particles A and B of equal masses have velocities v_A =2 + and v_B =- +2 . The particles move with accelerations a_A =-4 - and a_B =-2 +3 respectively. The centre of mass of th Rocket fuel is capable of giving an exhaust velocity of V_ rel =2.4 ~km / s in the absence of any external forces. The fuel required per kg of the payload to provide an exhaust vel Full Rotational Motion list All Olympiad workbook PYQs