Question

) A train takes 3h to reach from station B to station A and then 4h to return from station B to station A. The distance between the two stations is 350km. Find
(i)the total distance travelled
(ii) the average speed and
(iii) the average velocity.​

Answer 1

Answer:

the total distance travelled is 2(350km) which is 700km. average speed is 700000m/25200 seconds which is 27.78m/s. average velocity is zero as displacement is zero

Explanation:

Answer 2

Explanation:

i) Distance between A and B is 350km

so total distance travelled = distance from B to A + distance from A to B

= 350+350

= 700km

ii) average speed

$average \: speed \: = \frac{total \: distance \: covered}{total \: time \: taken} \\ = \frac{700}{3 + 4} \\ = \frac{700}{7} \\ = 100 \: km \: {h}^{ - 1}$

iii) since the train came back to its starting point, therefore displacement = 0

which implies that avg velocity is also Zero