Question

a car travels at an average speed of 40 km per hour for 1 hour and then at an average speed of 50 km per hour for 2 hours what is the total distance covered by the car ​

Answer 1

Given that, a car travels at an average speed of 40 km per hour for 1 hour.

Distance = Speed × Time

Distance (d1) = 40 × 1 = 40 km

Also given that, the car travels at an average speed of 50 km per hour for 2 hours.

Distance (d2) = 50 × 2 = 100 km

We have to find the total distance covered by the car.

Therefore,

Total distance covered by car = d1 + d2

= (40 + 100)km = 140km

$\rule{200}2$

If we have to find the average speed of the car. Then,

Average speed = (Total distance covered)/(Total time by taken)

And the total distance covered by the car is 140 km.

Total time taken by the car = (1 + 2)hr = 3hr

Therefore,

Average speed = 140/3 = 46.66 km/hr

Answer 2

Answer:

The Distance covered by the car is 140 km.

Explanation:

$v₁=40kmph$

$t₁=1h$

$s₁=?$

$v=\frac{s}{t}$

$s=v*t$

$s=40*1$

$s₁=40km$

$v₂=50kmph$

$t₂=2h$

$s₂=?$

$v=\frac{s}{t}$

$s=v*t$

$s=50*2$

$s₂=100km$

$Total s=s<sub>1+s<sub>2$

$Total s=40km+100km$

$Total s=140km$