MCQ Class 9 Science Exploration Chapter 6 How Forces Affect Motion Advertisement 1. What can a force do to an object? Only change its color Only change its mass Change motion or shape Only increase weightQuestion 1 of 202. The SI unit of force is: Joule Newton Watt PascalQuestion 2 of 203. Force is a: Scalar quantity Vector quantity Constant quantity Derived quantity without directionQuestion 3 of 204. Balanced forces are: Unequal and same direction Equal and same direction Equal and opposite direction Unequal and opposite directionQuestion 4 of 205. When forces are balanced, an object: Must accelerate Moves faster Remains unchanged in motion Always stopsQuestion 5 of 206. Net force is zero when: Forces are unequal Only one force acts Forces are balanced Forces act at anglesQuestion 6 of 207. If two forces act in the same direction, net force is: Difference Product Sum ZeroQuestion 7 of 208. If two opposite forces are unequal, net force is: Sum Difference Product ZeroQuestion 8 of 209. Friction acts: Along motion Opposite motion Upward DownwardQuestion 9 of 2010. A box moves only when: Force equals friction Force is less than friction Force exceeds friction No friction existsQuestion 10 of 2011. Normal force acts: Horizontally Downwards Perpendicular to surface Along motionQuestion 11 of 2012. Weight acts: Upward Sideways Downward RandomlyQuestion 12 of 2013. Friction depends on: Color Surface nature Temperature only Shape onlyQuestion 13 of 2014. Smaller friction causes: Shorter distance Larger distance traveled No motion Faster stoppingQuestion 14 of 2015. Newton’s first law states that objects: Always accelerate Stay at rest or uniform motion Move in circles Stop automaticallyQuestion 15 of 2016. Inertia is: Ability to move Resistance to change in motion Force EnergyQuestion 16 of 2017. If net force is zero, acceleration is: Maximum Constant Zero InfiniteQuestion 17 of 2018. Constant velocity means: Speed changes Direction changes Both constant Motion stopsQuestion 18 of 2019. Force produces: Mass Acceleration Velocity only Distance onlyQuestion 19 of 2020. Newton’s second law is: F = mv F = ma F = m/a F = a/mQuestion 20 of 20 Loading...
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