Physics I

Conversion is an important concept in every measurement. What is TRUE about conversion of units?

• It is a process of changing the value of a quantity into a bigger value

• It is a process of changing the value of a quantity into a smaller value

• It is a process of changing a unit into another unit of the same quantity

• It is a process of changing a unit into another unit of different quantity

Mass is one fundamental quantity that is a measure of the amount of a substance. What is the standard unit of mass?

• kilogram

• gram

• pound

• slug

A bottle of soft drink can hold a maximum of 0.75 L of liquid. How many cubic centimeter (cm³) does it hold?

• 450 cm³

• 550 cm³

• 650 cm³

• 750 cm³

A student is doing an experiment in the laboratory and obtained the following results: Trial 1 = 1.29 Trial 2 = 1.93 Trial 3 = 0.88. The accepted value is 1.43. Which correctly describes this student?

• A. He is accurate but not precise.

• B. He is precise but not accurate.

• C. He is both accurate and precise

• D. He is neither accurate nor precise

A player threw five darts and strike all near the center of the target. What can you say about the accuracy and precision of the player?

• Accurate but not precise

• Precise but not accurate

• Both accurate and precise

• Neither accurate nor precise