Question

3- A car moving on a straight road and
travels with speed 60km/nor for one hand and then with Speed 80 km/hour for next 30min. find(I)distance travelled by the car.
(ii) av. speed of the car during the journey.​

Answer 1

1st travels with speed 60km/hour for one hour

distance traveled =speed ×time

d=60×1=60km

then travels 80km/hour for 30 minutes

d=s×t

d=80×1/2

d=40km

total distance =60+40

100km

average speed =60+80÷2

average speed =70km/hour