Ascientific hypothesis may turn out to be right or it may turn out to be wrong. if it is a valid hypothesis, there must be a test for proving that it isright. lawful. theoretical. wrong.

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.

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this