A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is, (a) u/g (b) u2 /2g (c) u2 /g (d) u/2g

Is value of h=5 m

(i) According to the equation of motion under gravity v2 − u2 = 2gs  Where,  u = Initial velocity of the ball  v = Final velocity of the ball  s = Height achieved by...

According to the equation of motion under gravity v2 − u2 = 2gs  Where,  u = Initial velocity of the stone = 40 m/s  v = Final velocity of the stone = 0...

According to the law of conservation, energy can neither be created nor be destroyed but can transform from one form to another.  Therefore, K.E. Lost by the ball = P.E. gained...

Law of conservation of momentum is applicable to isolated system (no external force is applied). In this case, the change in velocity is due to the gravitational force of earth.

(a) along west

The correct answer is (c) vA = vB  Explanation: The ball 'A' thrown vertically upward will return back to the initial point with the same thrown speed but its direction will be downwards....

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

(b) A will go higher than B. Explanation: The force of resistance of air will add to retardation of both the body but its magnitude will depend upon mass of the objects...