An eaeroplane is to go along straight line from A to B, and back again. The relative speed with respect to wind is V. The wind blows perpendicular to line AB with speed v. The distance between A and B is l. The total time for the round trip is:

An aeroplane flies along a straight line from A to B with a speed v_(0) . A steady wind v is blowing if AB=l then a)total time for the trip is (2v_(0)l)/(v_(0)^(2)-v^(2)) if wind blows along the line AB b)total time for the trip is 2l/sqrt(v_(0)^(2)-v^(2)) ,if wind blows perpendicular to the line AB c)total time for the trip decrease because of the pressure of wind d)total time for the trip increase because of the presence of wind

An airplane flies northward from town A and B and then back again. There is a steady wind blowing towards the north so that for the first state of the trip, the airplane is flying in the same direction as the wind and for the return trip of the journey, the airplane is flying opposite of the wind. The total trip time T_(omega) as compared to the total trip time in the absence of any winds T_(0) is:

A particle moves in a straight line from A to B with speed v_(1) and then from B to A with speed v_(2) . Find the average velocity and average speed.

A particle moves in a straight line from A to B (a) for the first half of distance with speed v_(1) and the next half of distance with speed v_(2) . (b) for the first one-third distance with speed v_(1) and the next two-third distance with speed v_(2) . (c ) for the first one-fourth distance with speed v_(0) , the next half of distance with speed 2v_(0) and the last one-fourth distance with speed 3v_(0) . Find the average speed in each case.

A particle travels along a straight line. It covers halg the distance with a speed (v). The remaining part of the distance was covere with speed v_(1) for half the time and with speed v_(2) for the other half the time . Find the average speed of the particle over the entire motion.