Answer:
The total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
Strength/magnitude would both work
Selective breeding. That is, breeding which uses extreme selectivity
Yes, all of these could be applied to a roller coaster.
Answer:
SI unit of k (spring constant) = N/m
Explanation:
We have expression for force in a spring extended by x m given by
F = kx
Where k is the spring constant value.
Taking units on both sides
Unit of F = Unit of k x Unit of x
N = Unit of k x m
Unit of k = N/m
SI unit of k (spring constant) = N/m
