A point traverses half a circle of radius R during theinterval tau.Calculate the following quantities averaged over that time (a)the mean velocity that is speed ltvgt , (b)the modulus of the mean vector lt v gt , ( c)the modulus of the average acceleration a if its tangential acceleration is constant.

A point traverses half a circle of radius R during theinterval tau.Cal

1.	A point traverses half a circle of radius R during theinterval tau.Calculate the following quantities averaged over that time (a)the mean velocity that is speed ltvgt , (b)the modulus of the mean vector lt v gt , ( c)the modulus of the average acceleration a if its tangential acceleration is constant.
Answer» Answer :< V > =`(PIR)/tau`,`l LT vevugtl=(2R)/tau , (2piR)/(tau^2)`