1. how do machines make work easier?
2. how do you calculate work (what is the formula for work? )

3. what is the formula for mechanical advantage?

4. how does friction impact work?
5. what is the relationship between kinetic and potential energy? 6. how do you calculate kinetic energy (what is the formula)
7. a 700-kg vehicle is traveling at a speed of 6 m/s. how much kinetic energy does it have?
8. two rocks of different masses are rolling down a hill at the same speed. which rock (small one or big one) would have more kinetic energy?

Machines do things more efficiently, Just use time, It gets in the way of work,

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

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