SSC MTS EXAM

Detailed explanation-1: -Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

Detailed explanation-2: -The reason it is half the volume of the bar and not the full volume (as in the incorrect Part the First analysis) is because we are considering the work done by a constant force accelerating an object which is initially at rest; the velocity of the object increases gradually from zero as the force acts upon it.

Detailed explanation-3: -KINETIC energy, Ek = ½mv^2 where m is mass and v is velocity. where s is distance, u is initial velocity v is final velocity a is acceleration and t is time. Hope this helps!

Detailed explanation-4: -According to the 2nd law of motion, F = ma——–(i) (Work done on an object W = F * s) By using 2nd equation of motion, S = ut + 1/2 at² (But, Initial velocity is 0) S = 0 + 1/2 at² Therefore, Now, By using first equation of Motion, V = u + at [ (U) Initial velocity is 0] V = 0 + at. V = at. 06-Aug-2019