Determine the mass of 29 cm³ of magnesium.

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative