MCQ Class 9 Science Exploration Chapter 4 Describing Motion Around Us Advertisement 1. What is motion? Change in shape Change in position with time Change in size Change in colorQuestion 1 of 202. Which type of motion occurs in a straight line? Circular motion Oscillatory motion Linear motion Random motionQuestion 2 of 203. What is required to describe the position of an object? Only distance Only direction Distance and direction Time onlyQuestion 3 of 204. A reference point is needed to: Measure time Describe position Measure speed Find massQuestion 4 of 205. An object is at rest when: It moves slowly Its position changes Its position does not change with time It has accelerationQuestion 5 of 206. Distance is a: Vector quantity Scalar quantity Both NoneQuestion 6 of 207. Displacement is: Always greater than distance Always equal to distance Net change in position Total path coveredQuestion 7 of 208. SI unit of distance is: km m cm mmQuestion 8 of 209. When can distance equal displacement? When direction changes When motion is circular When motion is in one direction NeverQuestion 9 of 2010. Displacement can be: Only positive Only negative Zero Always greater than distanceQuestion 10 of 2011. Average speed is defined as: Distance/time Displacement/time Velocity/time Acceleration/timeQuestion 11 of 2012. Speed is a: Vector Scalar Both NoneQuestion 12 of 2013. Uniform motion means: Equal distance in unequal time Unequal distance in equal time Equal distance in equal time No motionQuestion 13 of 2014. Non-uniform motion means: Constant speed Variable speed Zero speed Infinite speedQuestion 14 of 2015. Average velocity is: Distance/time Displacement/time Speed/time Acceleration/timeQuestion 15 of 2016. Velocity is a: Scalar Vector Both NoneQuestion 16 of 2017. SI unit of velocity is: m/s km/h m sQuestion 17 of 2018. Direction of velocity is same as: Speed Acceleration Displacement TimeQuestion 18 of 2019. Average acceleration is: Change in velocity/time Distance/time Speed/time Displacement/timeQuestion 19 of 2020. SI unit of acceleration is: m/s m/s² m²/s s/mQuestion 20 of 20 Loading...
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