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unit 1

motion, forces and energy

eight subtopics covering physical quantities, motion, mass, forces, momentum, energy and pressure.

written by vaibhav

1.1
physical quantities
SI base and derived units. scalars and vectors and significant figures.
1.2
motion
speed, velocity and acceleration. equations of motion. distance–time and speed–time graphs.
1.3
mass and weight
difference between mass and weight. gravitational field strength. weight as a force.
1.4
density
definition and calculation of density. density of common materials. floating and sinking.
1.5
forces
newton's laws of motion. types of forces. elastic deformation and spring constant.
1.6
momentum
definition of momentum. conservation of momentum in collisions. impulse and force.
1.7
energy, work and power
work done by forces. kinetic and potential energy. power and efficiency. energy conservation.
1.8
pressure
definition of pressure. pressure in solids, liquids and gases. atmospheric pressure.