Question

car covers 90km in one and a half hour find its velocity and displacement

Answer 1

distance = 90km= 90×1000 = 90000m
time = 60min+ 30min=90min= 90×60 = 5400sec
displacement is same as 90000m as there is no change in direction according to the question .
now velocity = displacement / time
= 90000/5400sec= 100/6 = 50/3 m/s

Answer 2

Heya.

Displacement of the car is the distance travelled by it = 90km

(Only if it travels in a straight path)

Time taken = 1 1/2 hour = 3/2hours.

Velocity= displacement/time

= 90/(3/2)

= 90×2/3

= 60kmph