Unit 5 MCQ Bank

Coefficient of Restitution

Checks the correct definition for impact problems.

Perfectly Elastic Impact

Checks the limiting restitution case.

Perfectly Plastic Impact

Checks the sticking-together case.

Momentum Conservation in Impact

Checks when momentum equations are used.

Inelastic Impact and Energy

Checks a common collision misconception.

Normal Force Work

Checks work sign for a force perpendicular to motion.

Friction Work Sign

Checks the usual sign of friction work.

Spring Energy

Checks the standard elastic potential relation.

Inclined Plane Weight Component

Checks the component of weight along the plane.

Inclined Plane Normal Component

Checks the component of weight normal to the plane.

Friction Direction Up the Plane

Checks direction choice in inclined-plane kinetics.

Friction Direction Down the Plane

Checks the complementary motion case.

Impulse Units

Checks the correct dimensional unit.

Area Under F-t Graph

Checks the graph interpretation in impulse problems.

Vertical Throw Top Condition

Checks the condition at maximum height.

Common Velocity After Sticking

Checks the immediate post-impact model.

Spring Compression After Impact

Checks the correct two-stage logic in repeated spring-impact questions.

Static Versus Kinetic Friction

Checks which coefficient is relevant before sliding begins.

Normal Force in Circular Motion

Checks the standard inward-force requirement.

Speed Constant on Curve

Checks whether acceleration disappears at constant speed.

Combined Tangential and Normal Acceleration

Checks vector combination in curvilinear kinetics.

Rotating Platform Slip Condition

Checks the friction limit in repeated rotating-platform questions.

Work by Weight

Checks the energy interpretation of gravity.

Positive Net Work

Checks the speed consequence of work-energy.

Rest Final State

Checks what happens to kinetic energy when a body stops.

Line of Impact

Checks the direction in which restitution is applied.

Frictionless Energy Conservation

Checks when mechanical energy conservation is appropriate.

Energy Loss with Friction

Checks the effect of non-conservative work.

Common Velocity Meaning

Checks the weighted-average character of plastic impact.

Skid Criterion on Curve

Checks the friction limit in curvilinear motion.

Maximum Spring Compression

Checks the kinematic condition at the end of spring motion.

Work-Energy Versus F = ma

Checks method choice when displacement is sought.

Impulse-Momentum Versus F = ma

Checks method choice for short-duration force actions.

Mass Unit Consistency

Checks a recurring practical trap in railroad-car impact questions.

Restitution Scope

Checks the dimensional and directional meaning of e.

Rebound Sign Convention

Checks sign discipline in collision equations.

Opposing Net Force

Checks the speed effect of force direction.

Tangential Force Effect

Checks the role of the tangential component in curvilinear kinetics.

Normal Force Effect on Curved Path

Checks the role of the normal component in curved motion.

Impact Impulse with Reversal

Checks how rebound affects momentum change.

Centripetal Demand and Friction

Checks the support/friction origin of circular-motion limits.

Work Against Friction on Incline

Checks the energy sign of friction in incline motion.

Rebound Height Relation

Checks the repeated bounce-height formula.

Momentum Along Impact Line

Checks the correct direction for impact equations.

Curvilinear Kinetics FBD

Checks what force balance must supply on a curve.

Combined Friction Limit

Checks the correct limit condition when both normal and tangential accelerations are present on a rough curve.

Kinetic Energy Speed Dependence

Checks a scaling result used in quick reasoning.