6.A stone is thrown vertically upwards with a vertical velocity of 49 m/sec. It returns to the ground in

7.The maximum displacement of a particle executing S.H.M. corresponds to

8.In a simple harmonic motion, the position of equilibrium is always

9.A particle moves in a straight line and its position is defined by the equation x = 6 t2 - t3 where t is expressed in seconds and x in metres. The maximum velocity during the motion is

10.A 2 m long ladder rests against a wall and makes an angle of 30� with the horizontal floor. Where will be the instantaneous centre of rotation when the ladder starts slipping ? i) 1.0 in from the wall ii) 1.732 m from the wall iii) 1.0 m above the floor iv) 1.732 m above the floor The correct answer is