Question

a car moving at 36 kilometre per hour it attains a velocity of 72 kilometer per hour find the distance travelled in this time period​

Answer 1

Answer:

Explanation:

v1 = 36 km/ hr

v2 = 72km/hr

let the distance be x

average distance = total distance / total time

total distance = x + x = 2x

total time = distance / velocity

T1 = x / 36 hr

T2 = x / 72 hr

total time = x/ 36 + x / 72 = 2x + x / 72 = 3x / 72 hr

now, putting in formulae , (average distance = total distance / total time)

average distance = 2x / 3x / 72 hr

= 2x×72/3x

= 2 × 36

average distance = 72 m