What will cause greater change in kinetic energy of a body? Changing its mass or changing its velocity.

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...

K.E. of first mass, m = P.E. lost by mass m = mgh  K.E. of second mass, 2 m = P.E. lost by mass 2 m  = 2 m × g ×...

Kinetic energy, K.E. = 1/ 2 mv2  If the velocity is constant, Kinetic energy is directly proportional to mass. So as mass increases, kinetic energy also increases. Here, mass of horse...

We know that  K.E = 1/2 m v2 We'll replace K.E i.e kinectic enerygy by 1 J and mass (m) by 1 kg (given in the question) 1 = 1/2 * 1 *...

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...

(d) : The centre of mass of bodies B and C taken together does not shift as no external force is applied horizontally.

(c) mgR. EXPLANATION:  The kinetic energy should be equal to the gravitational potential energy K=U = GMm/R.   Since g = GM/R² →GM =gR²  Hence, K = gR²*m/R =mgR

(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...