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• A scalar quantity is a number.
• A vector quantity is a number and a direction, for example, distance is scalar but displacement is vector.
• Mass is a scalar quantity, but weights which is your mass upon the earth is vector.
• Speed is scalar but velocity which is speed in a certain direction is vector.
• Acceleration and force are both vector quantities.
• Momentum is also a vector quantity.
• Distance equals speed times time, a distance is measured in meters, speed or velocity is measured in meters per second, and time is measured in seconds.
• Distance time graphs show us that if the slope is increasing, we are moving and the steeper the slope, the faster we are moving.
• Velocity time graphs show that if the slope is increasing, the object is accelerating.
• The area under a velocity time graph gives us the distance traveled.
• Acceleration is calculated as the gradient, which is up over cross or velocity over time.
• Force is calculated as mass times acceleration, where mass is measured in kilograms and acceleration is measured in meters per second squared.
• Centripetal force is a result of force when things are moving in a circle.
• Kinetic energy is half the mass times the velocity squared, measured in joules, with mass measured in kilograms and velocity measured in meters per second.
• The law of conservation of momentum states that momentum is always conserved, meaning the momentum before a collision is equal to the momentum after a collision.
• Hooke's law states that the change in length of a spring is proportional to the applied force, up to a certain point after which it is not.
• Mass is measured in kilograms, velocity is measured in meters per second, and momentum is measured in kilogram with a space meters per second.
• Momentum is the product of mass and velocity.
• If forces are unbalanced, there will be a torque effect, whether that be clockwise or anti-clockwise.
• The change in gravitational potential energy due to an object's acceleration is equal to the product of its mass and acceleration squared, measured in joules, with mass measured in kilograms and acceleration measured in meters per second squared.
• Gravitational potential energy is equal to mass times gravity times the change in height, measured in joules, with mass measured in kilograms, gravity measured in Newtons per kilogram, and height measured in meters.
• Power equals energy transferred over time, measured in watts, with transferred energy measured in joules and time measured in seconds.
• Work done is calculated by Force Times distance, measured in joules, with force measured in Newtons and distance measured in meters.
• If forces are balanced, there will be no torque effect.
• The moment of an object is equal to Force Times distance, measured in Newton meters, with force measured in Newtons and distance measured in meters.