Answer: Option A, Kettlebell exercise
Explanation: Kettlebell exercise is a form of exercise that help build strength as well as improve range of motion. There are several approaches to kettlebell exercise and it is recommended mostly for athletes.
These answers are very good. I made a 95% by using this as my answer key, but unfortunately, one of these is wrong. I don't know which one, all I know is that I got 19/20. Just wanted to throw that out there. :-) Good job, Sadaqasalaam3. And thank you.
2,450 Joules, kinetic energy is 1/2 mass x velocity squared.
The period of a mass-spring system is:
T = 2π
T = period, m = mass, k = spring constant
Given values:
T = 8π s
k = 2 N/m
Plug in and solve for m:
8π = 2π
= 4
m/2 = 16
m = 32 kg
Choice A