Four balls with different masses. 4018
20kg
10
ske
Kinetic energy is energy of motion. The kinetic energy of an object is dependent on two variables, speed and mass and can be represented by the formula
KE - 1/2mv?
1) Four balls were rolled at a set of wooden pins. The balls were rolled with different amounts of force so that they traveled at approximately the same speed. Will there be a difference in the amount of
pins knocked down? Explain

c is the answer because when something is left after something evaporates that shows the chemical change.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.