Question

A car travels in a straight line with a velocity of
80 km/h for 2.5 h and then velocity of 40 km/h for
1.5 h. The average velocity of the car is
(1) 45 km/h
(2) 35 kmh
(3) 40 km/h
(4) 50 km/h​

Answer 1

Explanation:

14.1 km/h is the ans...

find the distance travelled ..

D1= 80×2.5 =20km

D2= 40×1.5 =60km

Avg Vel = total distance /total time taken

so , 60+20/4 = 80/4 = 20km/h