MCQ Class 9 Science Exploration Chapter 6 How Forces Affect Motion Advertisement 1. If velocity changes, object is: At rest Accelerating Balanced StaticQuestion 1 of 202. Air resistance is: Always large Negligible sometimes Zero always Independent of motionQuestion 2 of 203. Force direction affects: Color Effect of force Mass TimeQuestion 3 of 204. Spring balance measures: Mass Force Speed EnergyQuestion 4 of 205. Smallest forces felt are: Newton Kilonewton Millinewton MeganeutronQuestion 5 of 206. Larger friction means: Longer motion Shorter motion Faster speed No effectQuestion 6 of 207. In tug of war equal force means: Rope moves Rope stops Rope breaks Rope acceleratesQuestion 7 of 208. Unequal forces cause: No motion Net force Balance RestQuestion 8 of 209. Acceleration direction is: Opposite force Same as force Random PerpendicularQuestion 9 of 2010. Airbags reduce injury by: Increasing force Increasing time Increasing mass Decreasing speed instantlyQuestion 10 of 2011. Catching ball by pulling hands back: Increases force Reduces force Stops motion instantly Increases accelerationQuestion 11 of 2012. Coconut cracks because: Low force High force in short time Gravity stops Friction vanishesQuestion 12 of 2013. System acceleration depends on: Internal forces External forces Only friction Only gravityQuestion 13 of 2014. Internal forces in a system: Affect motion Cancel out Increase speed Stop motionQuestion 14 of 2015. External force determines: Shape System acceleration Mass EnergyQuestion 15 of 2016. Two boxes connected move as: Separate systems One system Static system Balanced systemQuestion 16 of 2017. Friction always: Helps motion Opposes motion Increases speed Stops gravityQuestion 17 of 2018. Force is required to: Maintain constant velocity (ideal case) Change velocity Keep object at rest Maintain inertiaQuestion 18 of 2019. Galileo stated that without resistance: Motion stops Motion continues indefinitely Acceleration increases Objects fall fasterQuestion 19 of 2020. If no force acts, an object: Accelerates Stops Maintains state Changes directionQuestion 20 of 20 Loading...
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