A ship is sailing towards the north at a speed of 1.25 m/s. The current is taking it towards the east at the rate of 1 m/s and a sailor is climbing a vertical pole on the ship at the rate of 0.5 m/s. Find the velocity of the sailor in space.

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.

Velocity of a wave having wavelength 1.7 m is 340 m/s. Find the frequency of the wave.

According to the mariner 's compass , a ship is sailing towards east . If the declination at the place is 20^(@)E , what is the actual direction of motion of the ship ?

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,

A particle moves for 1 minute with a velocity of 15 m/s and moves for 0.5 minute with a velocity of 10 m/s. the average speed of particle is