Q. A truck travels a distance $A$ to $B$ at a speed of $40 km / h$ and returns to $A$ at a speed of $50 km / h,$ then what is the average velocity of the whole journey?

4570 229 Motion in a Straight Line Report Error

A

$34.5 km / h$

14%

B

$Z ero$

60%

C

$35 km / h r$

11%

D

$40 km / h r$

15%

Solution:

Displacement is zero