Forces, shape, movement and momentum

    Cards (13)

    • Different forces
    • Gravitational force: weight, there is a gravitational force of attraction between all objects with mass
    • Electrostatic force: between two charged objects
    • Vector quantities have size and direction
    • Vector quantities examples: displacement, velocity, acceleration, force, weight
    • Scalar quantities have size but no direction
    • Scalar quantities examples: distance, mass, speed, time
    • Resultant forces of forces acting along a line: add them together
    • Friction: a force opposing motion, the kinetic energy of the moving object is transferred to heat as friction force does work
    • Force = mass x acceleration
    • Weight = mass x gravitational field strength (10 N/kg)
    • Stopping distance = thinking + braking distance
    • Factors affecting stopping distance: speed, mass, road conditions, reaction time