AS91171 MECHANICSYear 12 Physics · Interactive learning
Explore · Move · Explain

Physics you can move.

Pick a chapter. Watch the motion, drag the objects, and explain the physics.

02 / Mechanics

Linear Motion

Signs, motion graphs, kinematics and two-vehicle investigations.

Explore Linear →
03 / Mechanics

Relative Velocity

Drag vectors to explore components, build sums, change observers and investigate river crossings.

Explore Relative Velocity →
04 / Mechanics

Projectile Motion

Shared time, launch components, trajectories and exam investigations.

Explore Projectile →
05 / Mechanics

Newton Laws and Force Balance

Forces change velocity. A free-body diagram includes only forces acting on the selected object; the net force is their vector sum.

Explore Forces →
06 / Mechanics

Circular Motion

Uniform circular motion has constant speed but changing velocity. The net radial force is inward; “centripetal” describes its role, not a new type of force.

Explore Circular →
07 / Mechanics

Momentum and Collisions

Momentum is a vector. For an isolated system, total momentum is conserved through a collision; kinetic energy need not be.

Explore Momentum →
08 / Mechanics

Impulse and Cushioning

Impulse is the change in momentum. Spreading the same momentum change over a longer time reduces average force.

Explore Impulse →
09 / Mechanics

Work, Energy and Power

Work transfers energy. Choose a system, identify energy stores and account for dissipative transfers. Power measures the rate of energy transfer.

Explore Work / Energy / Power →
10 / Mechanics

Springs and Elastic Energy

Within the linear elastic range, restoring force is proportional to displacement from the natural length. The area under a force–extension graph is stored elastic energy.

Explore Springs →
11 / Mechanics

Moments and Equilibrium

Equilibrium requires both zero net force and zero net moment. A force’s turning effect depends on its perpendicular distance from the pivot.

Explore Moments →