The total work done on a particle is equal to the change in its kinetic energy

Expression for kinetic energy  Ek= ½ mv2  m = Mass of object  v = Velocity of the object in ms−1  Given that kinetic energy, Ek=25J  (i) If the velocity of an object is doubled, then...

(a) Kinetic energy of an object is defined as the energy possessed by a body by virtue of its motion.  It is given by, K.E = 1/2 mv2  No, the kinetic energy...

When force applied on a body causes the body to move then the work is said to be done by the force.  Positive work done: when the body is displaced in...

Kinetic energy The work done against the direction of friction reduces the velocity of a body. Hence, there is a loss of kinetic energy of the body.

True In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system. This is because in such collisions, there is always a loss...

Kinetic energy Less Total mechanical energy of a satellite is the sum of its kinetic energy (always positive) and potential energy (may be negative). At infinity, the gravitational potential energy of the...

The correct answer is (c) CA > CB

(a) total energy Explanation:-  External forces will either change KE or PE or both of a system. Since total mechanical energy (KE+PE) of a system is conserved when no external force acts,...

(a) the initial kinetic energy is equal to the final kinetic energy  Explanation:  The initial kinetic energy before the collision and the final kinetic energy after the collision will remain the same....

(b) the final kinetic energy is less than the initial kinetic energy  Explanation:  If the collision is perfectly inelastic the deformation of the bodies during the collision is permanent and the part of...