Answer: The mass of an object can be calculated in a number of different ways: mass=density×volume (m=ρV). Density is a measure of mass per unit of volume, so the mass of an object can be determined by multiplying density by volume. mass=force÷acceleration (m=F/a).
Answer:
Explanation the third one for the second question
B.changing speed
Explanation:
because if it keeps changing directions and turning it's going to slow down and then speed up.
The plasma membrane of a cell is a group of lipids and proteins that forms the boundary between a cell's contents and the outside of the cell.
True , because gravity is a force of nature. Matter (energy) does attract other matter