Edexcel•GCSE•Physics
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Motion and Forces
Speed, velocity, acceleration, Newton's laws, momentum and stopping distances
Practice 39 subtopics in Motion and Forces. All questions match the Edexcel GCSE specification.
About Motion and Forces
Motion and Forces is a key topic in the Edexcel GCSE Physicsspecification. This topic covers speed, velocity, acceleration, newton's laws, momentum and stopping distances.
Master all 39 subtopics below with unlimited AI-generated questions. Each subtopic page includes sample questions and the ability to generate unlimited practice questions with detailed solutions.
All Subtopics (39)
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Distance and displacementSpeed and velocityCalculating speed (speed = distance/time)Typical speeds (walking, running, cycling, cars, trains, planes, sound)Distance-time graphsCalculating speed from distance-time graph gradientCurved distance-time graphs (changing speed)Acceleration definitionAcceleration equation (a = Δv/t)Uniform and non-uniform accelerationVelocity-time graphsGradient of velocity-time graph as accelerationArea under velocity-time graph as distanceAcceleration due to gravity (g ≈ 10 m/s² or 9.8 m/s²)Equations of motion (suvat) (H)v² = u² + 2as (H)Types of forces (gravity, friction, air resistance, tension, normal contact)Gravitational field strengthWeight equation (W = mg)Mass vs weightResultant forceFree body diagramsNewton's First Law (balanced forces, inertia)Newton's Second Law (F = ma)Core Practical: Investigate force, mass and accelerationNewton's Third Law (action-reaction pairs)Inertial mass as resistance to accelerationThinking distanceBraking distanceStopping distance = thinking + braking distanceFactors affecting thinking distance (speed, reaction time, tiredness, drugs, alcohol)Factors affecting braking distance (speed, road conditions, tyre condition, brake condition, mass)Braking force and decelerationLarge decelerations and dangersMomentum definition (p = mv) (H)Conservation of momentum (H)Momentum calculations in collisions (H)Force and rate of change of momentum (F = Δp/Δt) (H)Safety features (crumple zones, seat belts, air bags) (H)
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