1) 15 / 12 = 1.25 ratio
2) to increase acceleration 1.25 times (with same F, or same engine) you have to lower mass 1.25 times
3) 1515/1.25 = 1212 kg
choose A
The term that best describes how many waves that pass? It's frequency because how many waves are passed by a given point or time is called the waves frequency. I hope this helped you out on your assignment.
i think the answer is B police siren.
<span>500 cubic centimeters</span>
D. <span>Johannes Kepler argued that Earth was the center of the universe.
</span>
