Which of the following is a characteristic of science? (3 points) It asks questions about the natural world.
It asks questions that cannot be tested.
It is done by only one scientist at a time.
It uses opinions to make conclusions.

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

the total distance traveled by the car is

30km + 49km = 79 km .

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.