Find average speed of 40m/s and 50m/s.

A man travels 200 km distance with the speed of 40 m/s and next 50 km with the speed of 10 m/s . Find the average speed of man.

Consider an 1100 particels gas system with speeds distribution as follows : 1000 particles each with speed 100 m//s 2000 particles each wityh speed 200 m//s 4000 particles each with speed 300 m//s 3000 particles each with speed 400 m//s and 1000 particles each with speed 500 m//s Find the average speed, and rms speed.

A man moves up on a 3 km long incline road with speed of 2m/s , then on a 3 km level road with speed of 3 m/s and moves down on a 3 km long incline road with 6 m/s. Find the average speed of man.

A man travels half time of its journey with speed of 5m/s and for remaining half time he moves half of its total distance travelled, with speed of 3 m/s and remaining half distance with speed of 6 m/s. Find out the average speed of the man?

A truck moves a distance of 50 km. It covers first half of the distance at speed of 200 m/s and second half at speed v. If average speed of truck is 100 m/s then value of v is

Define average speed and r.m.s. speed of a gas molecule.

A pump ejects 12000 kg of water at speed of 4m/s in 40 second. Find the average rate at which the pump is working.

A ball is thrown up at a speed of 4.0 m/s. Find the maximum height reached by the ball. Take g=10 m//s^2 .

The distance travelled by a particle in time t is given by s=(2.5m/s^2)t^2 . Find a. the average speed of the particle during the time 0 to 5.0 s, and b. the instantaneous speed ast t=5.0 is

A particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively. The average speed of the particle during this motion is :-