The marshmallow shrunk because of the increased amount of air pressure. I know this because I have once decreased the air pressure, (put a marshmallow in vacuum chamber), and it expanded.
Potassium: K
Copper: Cu
Chlorine: Cl
i hope this is what you’re asking for
<h2>Ratio of final kinetic energy to initial kinetic energy is 16.</h2>
Explanation:
Kinetic energy , KE = 0.5mv²
Here car speeds up to four times the initial speed, we need to find ratio of final kinetic energy to initial kinetic energy.
Final speed = 4 x Initial speed = 4v
Initial KE = 0.5mv²
Final KE = 0.5 x m x (4v)²
Final KE = 16 x 0.5 x m x v²
Final KE = 16 x Initial KE
Ratio of final kinetic energy to initial kinetic energy is 16.
The net force on the object is zero, so it has no acceleration. It moves in a straight line and at a constant speed (which may be zero).