The chemical equation for sodium sulfate is Na2SO4. How many sulfur atoms are in the formula for sodium sulfate?

What is the energy of motion?

When do you add forces together?

What is the law of conservation of energy?

Two liquids are added together in a beaker. A precipitant is formed. What kind of change is this?

A train travels 25 km in .5 hrs. How fast is the train going?

What is the formula for speed?

2 students are working to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table. If the force of friction resisting the student’s push is 4 N, what is the net force acting on the board?

Potential or Kinetic: A pencil falls off the desk.

During a game of tug-a-war, neither team is able to make any advance. What can be assumed about the forces?

Potential or Kinectic: A football player throws a football.

A car speeding up or slowing down is an example of what?