Acar traveled 30 km in 1 hour, 40 km in the next 1 hour, and then 30 km in 2 hours before reaching its destination. what was the car’s average speed?

a car traveled 30 km in 1 hour, 40 km in the next 1 hour, and then 30 km in 2 hours before reaching its destination. what was the car’s average speed?

1st case

car travel 30 km in 1 hour

2nd case

car travel 40 km in 1 hour

3rd case

car travel 30 km in 2 hours

so total distance taken by car

= 30+ 40+ 40

= 110 km

total time taken

= 1 + 1 + 2 = 4 hours

average speed

= total distance / total time

= 110 / 4

= 27.5 km/h

so average speed is 27.5 km/h.

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it

law of conservation of matter