A batsman hits a ball. Which factor can remain unchanged despite force acting?, Speed, Direction, State of rest, Shape, If balanced forces act on a resting box, the box will?, Gain mass, Change color, Remain at rest, Start moving, Which pair contains only non-contact forces?, Gravitational, magnetic, Muscular, normal, Friction, tension, Friction, muscular, A force of 5 N east and 5 N west act on an object. The net force is?, 5 N west, 0 N, 5 N east, 10 N east, Which statement about friction is correct?, It acts without surfaces, It is non-contact, It opposes relative motion, It always increases speed, When can a force change only the direction of a moving object?, In circular motion, Only in vacuum, Without any motion, At complete rest, A plastic comb attracts paper bits after rubbing. This is due to?, Buoyant force, Electrostatic force, Frictional force, Muscular force, Which action involves contact force only?, Apple falling, Magnet attracting pin, Charged balloon pulling hair, Pushing a cart, A lump of clay is pressed by hand. The force mainly changes its?, Density only, Mass, Shape, Temperature only, An object moves with constant speed in a straight line. The net force on it is?, Equal to weight, Equal to friction, Maximum, Zero

Class 9 Exploring Force NCERT

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