ves on a circular track of ed u The work done by ompletes one circle is NCERT Pg 116 2 Zero m and it rebounds to a age loss of energy is NCERT Pg 125 70 10 c energy twice its body is NCERT Pg 119 2 m s 3 m s ng with velocity of y possessed by it NCERT Pg 119 J 5 J d smooth incline ght h and base mooth horizontal m top of a plane plane the kinetic CERT Pg 121 m h h gs then which equilibrium of a CERT Pg 120 14 The power required by engine of car of m 1000 kg to accelerate it from rest to a spos 72 km h in 20 s is 2 1 kW 1 10 kW 3 100 kW 4 1000 kW 15 A bullet of mass 100 g hits a block of thick 5 cm with a speed of 200 m s It emerge 10 of its initial kinetic energy Then its on INCERT P speed will be 2 20 3 m s 1 20 10 m s 4 10 10 m s 3 20 m s 16 A stone of mass 2 kg tie with the help of the length 2 m and moves in vertical circular The difference between tension in the thread at point and at the highest point is Take g 10 NCERT P 1 60 N 3 30 N 2 120 N 4 240 N 50 m 17 A body is released from position A as show figure The speed of body at position Bis NCERT P 10 m A chain of mass 2 kg is placed th of its length hang 4 B with if the length of chain is 4 mt pulling the hanging portion of surface of the table is 3 2 J If momentum of a body is kinetic energy will be decm 12 4 1 25 3 75 Internal force cannot cha 1 Kinetic energy 2 Total momenturn 3 Total energy of s 4 All of these 1 10 m s 2 10 2 m s 3 20 m s 4 20 2 m s 18 A ball of 4 kg mass moving with velocity 40 m east direction collides with another ball of mass moving with velocity 20 m s in east dired After collision two balls stick together then los kinetic energy is NCERT Pg 1 360 J 2 240 J 3 480 J 4 600 J 19 Which quantity remains conserved in all types d collisions NCERT Pg 129 Y Select correct s equilibrium 1 Potential energ equilibrium 2 Slope of poter is zero at sta 3 A restoring slightly disp position 4 All of these In a conservat function of po corresponding 1 X 3 x 25 If a mass identical r after coll angle of 1 30