Answer:
W is not a subspace.
Step-by-step explanation:
Notice that (-1,2,2) and (-1,5,3) are both elements of W. Because its x coordinate, x = -1, satisfy the condition |x| = 1.
but (-1,2,2) + (-1,5,3) = (-2,7,5) do not belongs to W. Because its first coordinate, x =-2, do not satisfy |x| = 1.
A cycle, that is in the consideration of the earth and also help the combinations of things
Check the picture below.
so it hits the ground when y = 0, thus


since "t" is seconds it took, it can't be a negative amount.