Question

A car moves with a speed of 30 km/h–1

for half an hour, 25 km/h–1

for one hour and

40 km/h–1

for two hours. Calculate the average speed of the car. (2)​

Answer 1

Answer:

average speed = total distance travelled / total time

Total distance travelled

= 30km/h * 0.5 h + 25km/h * 1 2/3 h

+ 40km/h *2 h

= 136.667 km

Total time = 0.5+1 2/3 + 2

= 4.1667 h

Average speed = 136.667/4.1667

= 32.8 km/h...hope helps plszz mark as the brainlist now also inbox me and follow me

Answer 2

Answer:

As we know that

average speed = total distance covered / total time taken

here, total speed is 30+25km/hr = 55 * 5/18 m/s

total time = 90 mins

so,average time = 15.27 / 90

=0.696

Explanation: