MCQ Newton’s Third Law of Motion Chapter 8 Class 9 Science Advertisement MCQ’s For All Chapters – Science Class 9th 1. Newton’s Third Law of Motion states that:Every action has a smaller reactionEvery action has an equal and opposite reactionForce and reaction act in the same directionNo reaction occurs without frictionQuestion 1 of 152. The action and reaction forces act:On the same bodyOn different bodiesIn the same directionWith different magnitudesQuestion 2 of 153. When a gun is fired, the backward movement of the gun is called:FrictionInertiaRecoilResistanceQuestion 3 of 154. In the recoil of a gun, the bullet moves forward and the gun moves backward because:Action and reaction act on the same bodyAction and reaction are unequalAction and reaction are equal and oppositeGravity acts differently on bothQuestion 4 of 155. When you walk, you push the ground backward.The ground:Pushes you backwardPushes you forwardDoes not exert any forcePulls you downwardQuestion 5 of 156. In the game of football, two players colliding feel hurt because:Only one applies forceEach exerts equal and opposite force on the otherBoth move in the same directionFriction reduces the forceQuestion 6 of 157. When a sailor jumps out of a boat, the boat moves backward due to:InertiaGravityAction and reaction forcesBalanced forcesQuestion 7 of 158. The example of two spring balances attached to each other shows that:Both show different readingsBoth show same readings due to equal and opposite forcesThe lower one shows more forceOnly one balance worksQuestion 8 of 159. The reaction to a ball hitting a wall is:Wall pushing the ball backWall breakingWall absorbing the forceFrictional forceQuestion 9 of 1510. When a person swims forward, the water:Pushes him backwardPushes him forwardDoes not apply forceIncreases frictionQuestion 10 of 1511. Even though action and reaction are equal, accelerations are unequal because:Masses of objects are differentForces act in opposite directionsVelocities are sameFriction is absentQuestion 11 of 1512. When a hammer strikes a nail, the nail:Does not apply any forceApplies an equal and opposite force on the hammerApplies a smaller forceMoves because of gravityQuestion 12 of 1513. A rocket moves upward because:It is light in weightIt pushes gases downward, and gases push it upwardAir pushes it upwardThere is no gravity in spaceQuestion 13 of 1514. In a tug of war, both teams pull the rope with equal force, yet the rope moves toward one side because:Forces are unbalanced due to frictional differencesBoth teams apply same frictionReaction does not occurAir pressure helps one sideQuestion 14 of 1515. When a person throws a heavy bag forward while standing on a cart, the cart moves backward because:Air pushes itThe reaction force acts backward on the cartThe cart is heavyThe bag is lightQuestion 15 of 15 Loading...
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