RoshiniC RoshiniC

01-09-2021
Physics

contestada

7. A car travels a certain distance with a speed of
50 km/h and returns with a speed of 40 km/h.
Calculate the average speed
Plz help

Respuesta :

PetrosStudios PetrosStudios

01-09-2021

Let distance be x.

Time in going, t 1 = x/50

Time in coming, t 2 = x/40

Total time T = x/40 +x/50 = 9x/200

Average speed = total distance/ total time

=( x+x)/(9x/200)= 2x ×200/9x = 400/9 = 44.44 km/h

Answer Link

Otras preguntas

I will give brainly Est, please help

In 3–5 sentences, explain how genetic modification helps provide food for a growing population

1482 : ( 147 + 10 x X) = 6

What is an advantage of using models to represent the carbon cycle? can collect data on the amount of carbon in the atmosphere at a specific time show a complet

948008710 divided by 10 (you can get 100 points)

Please help!!! Although atoms can be rearranged in physical or chemical changes they are never _____ or ___. This is referred to as the law of conservation of

plssssssssss sssssssssssssssssssanswer

The lemonade recipe calls for 1 cup of lemon juice to 6 cups of water. How much lemon juice is needed for each cup of water?

0.3^3÷0.9⋅20+6.4÷0.2NEED ANSWER AS SOON AS POSSIBLE!!! 20 POINTS

Could someone please help me