MCQ Class 9 Science Exploration Chapter 6 How Forces Affect Motion Advertisement 1. Acceleration depends on: Only force Only mass Force and mass Time onlyQuestion 1 of 202. Larger force gives: Smaller acceleration Larger acceleration No change Constant velocityQuestion 2 of 203. Larger mass gives: Larger acceleration Smaller acceleration No acceleration Infinite accelerationQuestion 3 of 204. One newton equals: 1 kg m/s 1 kg m/s² 1 kg/s 1 m/s²Question 4 of 205. Gravitational force is: F = ma F = mg F = mv F = m/gQuestion 5 of 206. Value of g near Earth: 5 m/s² 9.8 m/s² 20 m/s² 1 m/s²Question 6 of 207. Momentum equals: mass × acceleration mass × velocity force × time velocity × timeQuestion 7 of 208. Newton’s third law states: F = ma Action equals reaction Motion is constant Force causes motionQuestion 8 of 209. Action-reaction forces act on: Same object Different objects Same direction Same magnitude onlyQuestion 9 of 2010. Action-reaction forces are: Equal Opposite Both A and B NoneQuestion 10 of 2011. When you walk, you push ground: Forward Backward Upward DownwardQuestion 11 of 2012. Friction helps walking by: Opposing motion Pushing forward Stopping movement Increasing massQuestion 12 of 2013. Rocket moves due to: Gravity Friction Action-reaction MagnetismQuestion 13 of 2014. Canoe moves forward because: Water pulls it Paddle pushes water backward Air pushes it Gravity actsQuestion 14 of 2015. Balloon moves when air escapes because: Gravity Pressure only Action-reaction FrictionQuestion 15 of 2016. Equal forces on same object: Accelerate it Cancel out Double effect Reverse motionQuestion 16 of 2017. Equal forces on different objects: Cancel Act independently Double motion Stop motionQuestion 17 of 2018. Earth attracts object due to: Magnetic force Friction Gravitational force Electrostatic forceQuestion 18 of 2019. Frictionless surface causes object to: Stop Move forever Accelerate FallQuestion 19 of 2020. Constant velocity means net force is: Maximum Zero Minimum InfiniteQuestion 20 of 20 Loading...
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