When do you add forces together?

When would a skateboarder have the most potential energy? (at the top, bottom, or middle of the hill)

What is the difference between the velocity and the speed of an object?

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

What is the law of conservation of energy?

What is the definition of force?

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 car parked in a parking lot

Potential or Kinectic: A football player throws a football.

Potential or Kinetic: A pencil falls off the desk.

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

A pencil falls off a desk that is 1.5 meters tall. If the pencil had a speed of 3 m/s, then how long did it take for the pencil to reach the ground?

A quartback throws a football 25 yards in 2.6 seconds. How fast was the football going?