24 terms

Year 10 Physics of the Car

Terminology used - Motion, Forces and Energy
STUDY
PLAY
Acceleration
the rate at which velocity (speed) changes over time
Speed
the measurement of distance over time
Force
A push or pull
Velocity
The speed and direction of motion of a moving body.
Friction
the force that opposes the motion of one surface as it moves across another surface
Gravitational Potential Energy
stored energy as a result of the height from the ground with a formula of GPE=mgh
Kinetic Energy
Energy in motion with a formula of KE=1/2mv2
Displacement
Distance and direction of an object's change in position from the starting point.
Air Resistance
friction caused by air
Newton's 1st law
(Law of Inertia) an object in motion tends to stay in motion & an object at rest stays at rest unless acted upon by an outside force.
Newton's 2nd law
Force = Mass x Acceleration or F=ma
Newton's 3rd law
For every action there is an equal and opposite reaction
Law of Conservation of Energy
energy can neither be created nor destroyed: it can only be transformed from one state to another
Gravitational Pull
The acceleration due to gravity g= 9.8 m/s2
Inertia
The tendency of a body to maintain its motion unless acted upon by another force
Momentum
The product of a body's mass and its velocity
Weight
A measure of the force of gravity on an object, measured in Newton instead of Kg.
Mass
The amount of material or matter in an object, measured in Kg. Mass stays the same wherever you are.
Gravity
The force of attraction between all masses in the Universe.
Newton
The unit of measurement for force or weight.
At rest
An object that is in the state of stationary - not moving
Deceleration
A reduction in the velocity of a moving body with respect to time (negative acceleration)
Stopping distance
The sum of thinking (reaction) distance and braking distance.
Reaction time
The time required for the driving to react and press the brake pad after recognition of an object or hazard in the roadway - about 1 second.