2.2 and 3.1 Nature of Quantities and Motion Flashcards
Is mass scalar of vector?
Scalar
Is density a scalar or a vector quantity?
Scalar
Is volume a scalar or a vector quantity?
Scalar
Is distance a scalar or a vector quantity?
Scalar
Is speed a scalar or a vector quantity?
Scalar
Is energy a scalar or a vector quantity?
Scalar
Is power a scalar or a vector quantity?
Scalar
Is weight a scalar or a vector quantity?
Vector
Is pressure a scalar or a vector quantity?
Vector
Is impulse a scalar or a vector quantity?
Vector
Is displacement a scalar or a vector quantity?
Vector
Is velocity a scalar or a vector quantity?
Vector
Is acceleration a scalar or a vector quantity?
Vector
Is momentum a scalar or a vector quantity?
Vector
Define Newton.
Force is 1N when 1kg of mass has an acceleration of 1ms-2
Why can the equation F = ma not be applied to particles travelling very close to the speed of light?
Mass of particles increases as speed gets closer to speed of light.
What factors affect thinking distance?
- higher speed
- tiredness
- alcohol and drugs
- distractions
- age
What factors increase braking distance?
- higher speed
- poor road conditions
- bad brakes
- bad tyres
- mass of car
Equation for thinking distance?
Reaction time x speed of car
What is impulse?
Change in momentum
What is the equation for impulse?
Force x time
What is the equation for impulse?
Force x time
Define braking distance
The distance travelled between when the brakes are applied and when the car stops
What’s 1mph in ms?
0.447
Define velocity
Rate of change of displacement
