Answer:
a reference point allows you to determine the motion of an object :)
example: when your in a car and u look out the window and your moving fast than the car next to you. It seems that way because the car next to you is actually moving much slower.
Answer: A
Explanation:
honestly, it sounded the best
706.68 N
By Hooke's law,
Using the values in the question,
When e = 0.4 m,
Energy