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The minute hand of a wall clock is 14 cm long. In the time interval from 6 PM to 6 : 30 PM, the tip of the minute hand has: (A) average velocity = 0.56 m/hr (B) average speed = 0.88 m/hr = 0.88 m/hr) (C) average acceleration = 3.52 m/hr D) travelled distance = 0.44 m
average velocity = total displacement /total time total displacement = 2L = 28cm =0.28m total time = 30mins = 30/60 hr = 0.5hr average velocity = 0.28/0.5 = 0.56km/hr ansA average speed = total distance/total time total distance = piL = 0.4396m total time = 30mins = 0.5hr average speed = 0.4396/0.5 = 0.88m/hr ansB distance travelled = piR = 3.14*14 = 43.99cm=.44m ansD
average velocity = total displacement /total time
total displacement = 2L = 28cm =0.28m
total time = 30mins = 30/60 hr = 0.5hr
average velocity = 0.28/0.5 = 0.56km/hr ansA
average speed = total distance/total time
total distance = piL = 0.4396m
total time = 30mins = 0.5hr
average speed = 0.4396/0.5 = 0.88m/hr ansB
distance travelled = piR = 3.14*14 = 43.99cm=.44m ansD
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