1 A body of mass 3 kg travelling along a straight horizontal path covers a distance of 5 m in its 5th second of motion If it starts from rest the momentum of the body 3 s after its start of motion is 10 10 20 2 kgms kgms 3 3 10 kgms 4 kgms 3 2 The displacement of a particle having 1 kg mass in two successive 2 second intervals are 10 m and 4 m respectively If it starts with initial velocity 20 m s the momentum of the particle after 76 m displacement is 1 9 kgms 2 18 kgms 3 27 kgms 3 Two objects are connected by a string that passes over a frictionless pulley as shown in the figure where m ma and as and as are the magnitudes of the respective accelerations Which mathematical statement is true regarding the magnitude of the acceleration as of the mass m 1 a g 3 a2 g 4 The momentum of a body moving on a straight path vaires with time according to the graph shown in the figure The average force acting on the particle between t 0 tot 6 sis 1 0 75 N 2 1 67 N 3 0 33 N 4 zero 5 An object of mass m is acted upon by two antiparallel forces F and F F F If the change in velocity of the of the object is AV in time AT the force F in terms of F is AV AV 1 F F M3 2 F F M At 3 F F At 1 At MAV 4 F F MAV At Momentum kgm s 4 36kgms 4 a a 4 4 Time s 6 When a man climbs up the stairs without holding the railings the action and reaction force pair are 1 normal reaction by the step on him his weight 2 his weight normal reaction by the step on him 3 his force pushing the step horizontally forward force by the step horizontally backwards 4 force of his foot vertically downwards force by the feet vertically upwards Marked Incorrect ov Next