What is the primary ethical concern in low-constraint research?

What will a positive and a negative charge do if they are separated from each other?

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

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.