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Science
Class 9

ICSE · Class 9 · Physics

Laws of Motion

Chapter 3ICSE · Class IX · examination 2028

8 worlds · 2 labs for this chapter.

Topics

Dynamics
- Contact and non-contact forces
- Newton’s three laws
- Momentum
- Universal gravitation
- Mass and weight

Learning objectives

Identify an action–reaction pair and apply a motion law.

Worlds

Places to explore freely · 8 worlds

WorldMomentum & CollisionsSwing a wrecking ball through a brick wall, crash a sled with and without a crumple zone, and couple railway wagons
WorldRocket PropulsionStatic-fire a rocket engine on a load cell, then fly a 12-tonne sounding rocket through the thinning air into space
WorldOrbits & GravitationFire Newton's cannon from a mountain above the air until the ball falls all the way round a real-scale Earth
WorldNewton’s Laws of MotionBrake a 1,720 t freight train from 100 km/h and watch it need nearly a kilometre: Newton’s laws in a rail yard
WorldFree Fall & Air ResistanceRace a hammer and a feather through a vacuum, then ride a 45 m drop tower until the air stops you speeding up
WorldMotion & ForcesEight experiments on one track, Class 6–9 or Class 10–12 — light gates, ticker tape, friction, a ramp, a crash — each stop measured by the cart itself
WorldGravity Across WorldsEight worlds on one physics engine — then drag gravity down and watch every machine answer at once
WorldPressure in LiquidsA tank you fill and drain — pressure with depth, jets from holes, what floats and what sinks, a hydraulic lift and a U-tube

Main labs

Built for this chapter · 2 labs

Main labGravitationPhysics
Main labForce and Laws of MotionForce, mass, acceleration

Practice

Questions for Class 9 Physics, with worked answers, on screen or as a printed paper.

Open the question bank

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