C.
Explanation: Because mirrors are lighter, and they are easier than lenses to make perfectly smooth.
Try this option, the answers are marked with colour.
Answer:
tbh vector does not have any direction at all the answer is 0
Newton's second law states that Fnet = ma, where Fnet is the net force applied, m is the mass of the object, and a is the object's acceleration. You have the values for Fnet and a, so you simply use this equation to solve for m, mass.
Answer:
.-2.0
Explanation:
as at 80 friction it's a 360?