Introduction to Mathematica - calculator and plotting features; numerical calculation of derivatives of functions; motion with a constant velocity; fall of a mass due to gravity; projectile motion in two dimensions; effects of air resistance on falling objects; numerical integration - centre of gravity calculations; conservation of energy and momentum - collisions of billiard balls; harmonic motion of a mass on a spring; the driven harmonic oscillator; the nonlinear pendulum; planetary motion - Newton's law of gravitation; coupled oscillators; addition of waves - interference; simulation of a collisionless gas; the Carnot engine; potential of several electric charges; charged particles motion in magnetic fields; resistor and capacitor circuits; two slit diffraction patterns; circuits with inductors, capacitors and resistors.