Inertia and Acceleration Quiz
Eight medium-difficulty multiple-choice questions probing definitions, applications, and consequences of inertia and acceleration.
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Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
Question 1: What best describes inertia in classical mechanics?
The speed at which an object moves under gravity
The ratio of acceleration to applied force
A force that always opposes motion
A body’s tendency to maintain its current state of motion
Question 2: Which equation directly links net force, mass, and acceleration?
Net force equals mass times acceleration (F = ma)
Force equals acceleration squared divided by mass
Acceleration equals force divided by velocity
Mass equals force times acceleration
Question 3: If two objects experience the same net force but one has greater mass, what happens?
Neither accelerates unless friction is zero
The heavier object accelerates less than the lighter one
The lighter object resists motion more due to lower inertia
Both accelerate equally because force is the same
Question 4: Which scenario best shows inertia causing a seemingly paradoxical effect in a car?
Engine noise increases at high speed
Wipers slow down when the car accelerates
Passengers lurch forward when the car stops suddenly
Headlights beam widens during braking
Question 5: How does doubling the net force on an object affect its acceleration, assuming mass is constant?
Acceleration doubles as well
Acceleration halves because force and acceleration are inverse
Acceleration remains unchanged
Acceleration increases by the square of the force change
Question 6: Which common belief about inertia is a myth?
More mass means more inertia
Inertia explains why seatbelts are important
Objects in uniform motion remain in motion without net force
Inertia is an active force pushing objects to stay at rest
Question 7: Which measurement would you change to reduce acceleration produced by a fixed engine force?
Raise engine RPM at idle
Lower aerodynamic drag
Increase the vehicle’s mass
Decrease the tire circumference
Question 8: A train enters a curve at constant speed. Which acceleration is present?
Centripetal acceleration toward the curve center
Tangential acceleration along the track
Negative inertia directed outward
No acceleration because speed is constant