A hydrogen is flying eastward with speed ` 12 m s^(-1)` , when wind starts blowing from north to south with speed ` 5 m s ^(-1)` what is the resultant velocity of balloon ?

A hydrogen balloon is flying eastward with speed 12 m s^(-1) , when wind starts blowing from north to south with speed 5 m s ^(-1) what is the resultant velocity of balloon ?

Two parallel rail lines are directed as north- south. A train X runs towards north with a speed of 15m*s^(-1) and another train Y runs towards south with a speed of 25 m*s^(-1) . (i) the velocity of Y relative to X,

Two parallel rail lines are directed as north- south. A train X runs towards north with a speed of 15m*s^(-1) and another train Y runs towards south with a speed of 25 m*s^(-1) . (ii) the velocity of ground with respect to Y,

Bird is flying in north-east direction with v= 4sqrt2 m/s with respect to the wind and the wind is blowing from north to south with speed 1 m/s. Find the magnitude of the displacement of bird in 3 sec.

A person travelling eastward with a speed of 3 kmh^(-1) finds that wind seems to blow from north. On doubling his speed, the wind appears to flow from north-east. Find the magnitude of the actual velocity of the wind.

A river is flowing from west to east with a speed 5 m s^(-1) . A swimmer can swim in still water at a speed of 10 m s^(-1) . If he wants to start from point A on south bank and reach opposite point B on north bank. In what direction direction should he swim ?

An air plane is flying with velocity 50km/h in north east direction . Wind is blowing at 25km/hr from north to south .what is the resultant displacement of air plane in 2 hours.

Two parallel rail lines are directed as north- south. A train X runs towards north with a speed of 15m*s^(-1) and another train Y runs towards south with a speed of 25 m*s^(-1) . (iii) velocity of a monkey running on the roof of X against its motion with a velocity of 5 m*s^(-1) relative to X, as observed by a man standing on the ground.