State True/False : The magnitude of displacement can never be zero. b) name the device to measure speed of an automobile. Q2) An athlete completes 1 round of circular track of diameter 200m in 40 secs. what will be displacement at the end of 2min20secs? Q3) Differ between Speed & Velocity(2points) Q4) Why is uniform circular motion known as acceleration motion?
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for a,ans is true
b)speedometer
c)displacement =200m
difference between speed is a scalar quantity,velocity is a vector quantity.
speed = distance/ time,velocity=speed with direction
b)speedometer
c)displacement =200m
difference between speed is a scalar quantity,velocity is a vector quantity.
speed = distance/ time,velocity=speed with direction
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