A particle moves along a semicircular path of radius $R$ in time $T$. If it returns to its starting point along the diameter in time $T/2$, what is the magnitude of the average velocity for the entire journey?

A body has speed of V,2V and 3V in first 1/3 of distance S, seconds 1/3 of S and third 1/3 of S respectively. Its average speed will be

A car travels 20 km east and then 10 km west in 2 hours. What is its average speed?

The motion of a particle is described by the equation $x = a + b{t^2}$, where a=15 cm and b=3 $cm/{s^2}$ Its instantaneous velocity at time 3 sec will be

A boat travels a distance $d$ downstream with speed $3v$ and returns upstream the same distance with speed $v$. Find its average speed for the entire journey.

A man goes 10 m towards North, then 20 m towards east then displacement is

The motion of a particle is described by the equation $x = a + b{t^2}$, where a=15 cm and b=3 $cm/{s^2}$ Its instantaneous velocity at time 3 sec will be

A train covers one-third of its journey at speed $v$, the next one-third at speed $2v$, and the final one-third at speed $3v$. Calculate the train's average speed for the entire journey.

If an object returns to its starting point, what is its displacement?

A particle moves 10 meters east and then 5 meters west. What is its total distance traveled?

A person walks 6 km due east and then 8 km due north. What is the magnitude of their displacement from the starting point?