Physics Quiz: Understanding Forces and Motion

Which of the following is a vector quantity?

• A efficiency
• B kinetic energy
• C power
• D weight

A student applies a force to a copper wire. Which row of the table shows the length and diameter of wire that would produce the greatest extension?

• A Length: x, Diameter: D
• B Length: x, Diameter: 2D
• C Length: 2x, Diameter: D
• D Length: 2x, Diameter: 2D

Two forces form a Newton’s third law pair. Which of the following statements is not true?

• A The forces act on the same object.
• B The forces have the same magnitude.
• C The forces act for the same time.
• D The forces are the same type of force

Which of the following is a vector quantity that represents both magnitude and direction?

• Efficiency
• Kinetic energy
• Power
• Weight

When a force is applied to a copper wire, which configuration would produce the greatest extension?

• Length x, Diameter D
• Length x, Diameter 2D
• Length 2x, Diameter D
• Length 2x, Diameter 2D

Which statement is NOT true about forces in a Newton's third law pair?

• The forces act on the same object
• The forces have the same magnitude
• The forces act for the same time
• The forces are the same type of force

A student is measuring acceleration due to gravity (g). Which graph configuration would provide a gradient equivalent to g?

• y-axis: s, x-axis: 2t²
• y-axis: s, x-axis: t²
• y-axis: 2s, x-axis: t
• y-axis: s, x-axis: 2t

A car travels from 3 m/s to 5 m/s over 15 m. What is the car's acceleration?

• (5³ - 3) / 15
• (5² - 3) / 21
• (5³ - 3) / 15²
• (5² - 3) / 15

As liquid temperature increases, what happens to a ball bearing's terminal velocity?

• Viscous drag decreases, liquid viscosity increases
• Viscous drag remains constant, liquid viscosity decreases
• Viscous drag decreases, liquid viscosity decreases
• Viscous drag increases, liquid viscosity increases

Which physical quantity represents the rate of change of position?

• Speed
• Acceleration
• Displacement
• Velocity