Question

5. A car travels from stop A to stop B with a speed
of 30 km/h and then returns back to A with a speed
of 50 km/h. Find
) displacement of the car.
(i) distance travelled by the car.
(ii) average speed of the car.​

Answer 1

Answer:

Explanation:

Displacement is the shortest distance between the initial and the final position. Here, the car travels from stop A to B and returns to stop A.

Thus, the displacement of the car is 0 m/s.

let the distance travelled by the car from stop A to B = x km

The car travels from A to B and returns back to B. Thus,

total distance travelled = 2x km

Time while going from A to B = Distance travelled / Speed taken

                                         = x/30 hours

Time while returning from stop B to A = x/50 hours