Elastic potential energy = 1/2 k * change of x^2
k- coefficient
x - change in length.
to increase energy 1.5 times you have to change x (compress) into

times (it's abot 1.22 or 22%)
Answer:
SORRY NOONE CAN HELP YOU>>> YOU OUR A LOST CAUSE
Explanation:
sorry the photo is blocked on my computer, but that doesnt mean your a lost cause..... have a good day
Average velocity is the change in distance divided by the time it takes to travel that distance. so the first one.
C. is the answer because acceleration is the change in velocity in time while velocity is speed with a direction