A body travels along a straight line for the first half of the total time with a constant speed of ` 20 m s^(-1)` and for the second half of the total time with a constant speed of `30 m s^(-1)` . Find the average speed of the body.

A person travels along a straight road for the first half length with a constant speed v_(1) and the second half length with a constant speed v_(2) . The average speed V is:

A car along a starigth line for the first half time with speed 50 kmh^(-1) and the second half time with speed 60kmh^(-1) . Find the average speed of the car.

A car moves with a speed of 30 "km.h"^(-1) in half of the total time taken and with 40 "km.h"^(-1) rest of the time, What is the average speed of the body?

A body of mass m moving along a straight line covers half the distance with a speed of 2ms^(-1) . The remaining half of the distance is covered in two equal time intervals with a speed of 3ms^(-1) and 5ms^(-1) respectively. The average speed of the particle for the entire journey is

A car travels along a straight line for first half time with speed 40 km//h and the second half time with speed 60 km//h . Find the average speed of the car.

A car travels along a straight line for first half time with speed 40 km//h and the second half time with speed 60 km//h . Find the average speed of the car.

A particle moving in a straight line covers first half of the distance into two equal time intervals with speed of 2 m/s and 4 m/s respectively, and second half with the speed of 5 m/s. The average speed of the particle is

A particle moving in a straight line covers first half of the distance into two equal time intervals with speed of 2 m/s and 4 m/s respectively, and second half with the speed of 5 m/s. The average speed of the particle is