Question

A car travels from stop A to B with a speed of 30km/h & then returns with a speed of 50km/h . Find
a) displacement of the path
b) distance travelled by the car
c) average speed of car

Answer 1

$$\begin{gathered} Dearstudent, \\ Displacement=0 \\ dis\tan cewillbe \\ fromAtoB \\ d=30\times t_1 \\ forreturn,d=50\times t_2 \\ Totaldis\tan ce=30t_1+50t_2 \\ avgspeed=\frac{totaldis\tan ce}{totaltime}=\frac{2d}{{\displaystyle \frac{d}{30}}+{\displaystyle \frac{d}{50}}}=37.5km/hr \\ Regards \end{gathered}$$