Questions in Work, Energy and Power

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A metal ball of mass 2 kg moving with a velocity of 36 km/h has an head on collision with a stationary ball of mass 3 kg. If after the collision, the two balls move together, the loss in kinetic energy due to collision is
A body of mass 2kg is moving with velocity 10 m/s towards east. Another body of same mass and same velocity moving towards north collides with former and coalsces and moves towards north-east. Its velocity is
Which of the following is not a perfectly inelastic collision
A mass of 20 kg moving with a speed of 10m/s collides with another stationary mass of $5kg.$ As a result of the collision, the two masses stick together. The kinetic energy of the composite mass will be
A neutron having mass of $1.67 imes {10^{ - 27}}kg$ and moving at ${10^8}m/s$ collides with a deutron at rest and sticks to it. If the mass of the deutron is$3.34 \times {10^{ - 27}}kg$then the speed of the combination is
The quantity that is not conserved in an inelastic collision is
A body of mass 40kg having velocity 4 m/s collides with another body of mass 60kg having velocity 2 m/s. If the collision is inelastic, then loss in kinetic energy will be
A body of mass ${m_1}$is moving with a velocity V. It collides with another stationary body of mass ${m_2}.$ They get embedded. At the point of collision, the velocity of the system
A bullet of mass m moving with velocity v strikes a block of mass M at rest and gets embedded into it. The kinetic energy of the composite block will be
In an inelastic collision, what is conserved

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