vikas askiitian expert
Last Activity: 14 Years ago
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