Forces and Motion Quiz

What does the term "motion" refer to?

• The color change of an object

• The change in an object’s position with respect to time and in comparison to the position of other objects used as reference points

• The sound an object makes

• The weight of an object

Why does the motion of the pinball in a pinball machine change as it bounces from one post to another?

• Because of the different types of forces acting on it

• Because the pinball is made of metal

• Because the game board is flat

• Because the pinball is colorful

Explain how the force of pedaling a bicycle affects your motion.

• It makes the bicycle heavier

• It causes the bicycle to change position and move

• It changes the color of the bicycle

• It makes the bicycle disappear

A batter hits a ball, causing it to move. What type of energy transformation occurs in this scenario?

• Kinetic energy to potential energy

• Potential energy to kinetic energy

• Sound energy to light energy

• Heat energy to electrical energy

A student claims that all changes in motion require a force. Use evidence from the text to support or refute this claim.

• Support, because the text states that all changes in motion require the input of a force.

• Refute, because the text says motion can change without force.

• Support, because the text says only heavy objects need force.

• Refute, because the text says force is not needed for motion.

If a car travels 12 meters in 4 seconds, what is its speed?

• 3 meters per second

• 4 meters per second

• 8 meters per second

• 48 meters per second

Which of the following best describes the difference between speed and acceleration?

• Speed is how fast something moves; acceleration is how quickly speed or direction changes.

• Speed is the direction of motion; acceleration is the distance traveled.

• Speed is measured in newtons; acceleration is measured in kilograms.

• Speed is the force applied; acceleration is the mass of the object.

A force of 10 newtons is applied to a 2 kg object. What is the acceleration of the object?

• 5 m/s²

• 20 m/s²

• 0.2 m/s²

• 8 m/s²

According to Newton’s second law of motion, what is the equation that relates force, mass, and acceleration?

• F = m/a

• F = m + a

• F = m × a

• F = a/m

How does increasing the mass of an object affect its acceleration if the same force is applied?

• Acceleration increases

• Acceleration decreases

• Acceleration stays the same

• Acceleration becomes zero