I think it is but 1. Element symbol
Answer:
The distance represents the difference of the first position and last position of the body.
Explanation:
For example, if y axis represents the position axis, and the first position is 3, second 9 we can see that the distance is a (positive) projection of one position into another. 9-3=6
Hope this helps.
There are 8 hydrogen atoms
The power of a machine is the work/time ratio for that particular machine
Its the rate of doing work.
backward movement
because momentum = mass × speed
And mass must be in positive value..
so negative value is speed
which moving backward..
