A person travels along a straight road for the first half length with a constant speed `v_(1)` and the second half length with a constant speed `v_(2)`. The average speed V is:

A person travels along a straight road for the first half length with a velocity v_(1) and the second half length with velocity v_(2) . What is the mean velocity of the person ?

A person travels along a straight road due east for the first half distance with speed v_1 and the second half distance with speed v_2 , the average speed of the person is

A girl travels along a straight road due east for the first half distance with speed v_(1) and the second half distance with speed v_(2) . What is the average speed of the girl ?

A person travels along a straight road for the first half with a velocity v_(1) and the second half time with a velocity v_(2) . Then the mean velocity vecv is given by

A body travels along a straight line for the first half of the total time with a constant speed of 20 m s^(-1) and for the second half of the total time with a constant speed of 30 m s^(-1) . Find the average speed of the body.

A person travels along a straight road for the first (t)/(3) time with a speed v_(1) and for next (2t)/(3) time with a speed v_(2) . Then the mean speed v is given by

A person travels along a straight road for the first (t)/(3) time with a speed v_(1) and for next (2t)/(3) time with a speed v_(2) . Then the mean speed v is given by