Look closely at the diagram that shows a roller coaster car at various points along the ride. Use it to answers Questions 3–4.

Which instrument is used to measure air temperature

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8