List of top Physics Questions on Conservation of energy asked in KEAM

A ball falling from a height of 20 m hits a floor and bounces back to a height of 17 m. The percentage of energy lost by the ball during the impact is
A ball falls from a height of 20 m, and then bounces back up to 17 m height. The loss of energy is
A rain drop of mass \(10g\) falls from a height of \(50m\) from rest. If the loss of energy due to air resistance is \(3J\), then the velocity of the drop on striking the ground is \((g = 10ms^{-2})\)
A mass \( m \), suspended vertically by a massless ideal spring with spring constant \( k \), is at rest. The mass is displaced upward by a height \( h \). When released, the kinetic energy of the mass will be proportional to (Neglecting air resistance)
A ball of mass \( m \) is projected upward with a speed \( v_0 \). The speed at a height \( h \) is (Neglecting air resistance)
When a body is projected vertically up from the ground with certain velocity, its potential energy and kinetic energy at a point A are in the ratio 2 : 3. If the same body is projected with double the previous velocity, then at the same point A the ratio of its potential energy to kinetic energy is
In elastic collision
In elastic collision
In elastic collision