Uppose you have a container filled with iron and sand. you can separate the iron from the sand if you so this is a

If steel is more dense that lake water, why can a boat float

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.

What are two different ways you could find the value of a? explain these methods.