A body has V, 2 2 and 3v in first 2/3 of distance S, second 1/3 of S and third 1/3 of s respectively. Its average speed wil be

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

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

A body travels for 15 second starting from rest with constant acceleration. If it travels distances S_(1), S_(2) and S_(3) in the first five seconds, second five seconds and next five seconds respectively the relation between S_(1), S_(2) and S_(3) is

If a car covers (2)/(3) of the total distance with speed nu_(1) and (3)/(5) distance with speed v, then average speed is

If a body covers a three equal distances with speeds v_1,v_2 and v_3 then what is the average speed of the body?

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.

If a particle travels the first half distance with speed v_(1) and second half distance with speed v_(2) . Find its average speed during journey.

If a particle travels the first half distance with speed v_(1) and second half distance with speed v_(2) . Find its average speed during journey.

If the sum of first n,2n,3n terms of an A.P. be S_1 , S_2 and S_3 respectively then prove that S_1+S_3=2S_2

N molecules of a gas have speeds 1,2,3....Nm/s respectively.The ratio of rms speed to average speed is