Answer:
I think D am not pretty show
The smallest unit of an element that has all the properties of the element is an atom. This has all the properties of an atom, including the particles.
Seems to me that it flies 400 m/s there and 600 m/s back the same distance.
therefore the average of 400 and 600 is 500 m/s. The distance is the same so the normal formula of (d2-d1)/(t2-t1) is applicable.
The answer to your question is: Yes.
To solve each and every one, write the two given numbers in place of their letters in the given equation, and then solve the equation for the letter that's left.
For example, let's do #1 together. I'll do all the work, and you just watch.
#1 says that s=d/t. It also tells us that 'd' is 4 and 't' is 2. So here's a great idea: Why don't we write '4' where it says 'd', and write '2' where it says 't', and then see what we've got ?
s = 4/2
Wow ! We know that 4/2 is 2 . So s=2 and that's exactly the answer to the question !
Now it's YOUR turn. Do the next 25 problems the same way.
YES it won’t let me submit my answer
