Bike Flashcards
Friction
Friction is a force between two surfaces that are sliding, or trying to slide, across each other.
Energy
Energy is the ability to do work.
Velocity
Velocity is speed in a given direction.
distance
the extent or amount of space between two things, points, lines, etc..
force
A force is anything which can change the velocity of an object or make it move
Mass
Mass is the amount of matter in an object.
acceleration
increase in speed or rate.
Attract
cause to come to a place or participate in a venture by offering something of interest or advantage
Lubricant
a substance used for lubricating an engine or component, such as oil or grease.
Gravity
the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
Repel
drive or force (an attack or attacker) back or away.
Newton
the SI unit of force. It is equal to the force that would give a mass of one kilogram an acceleration of one metre per second per second, and is equivalent to 100,000 dynes
North pole
either of the two locations ( North Pole or South Pole ) on the surface of the earth (or of a celestial object) which are the northern and southern ends of the axis of rotation.
South Pole
either of the two locations ( North Pole or South Pole ) on the surface of the earth (or of a celestial object) which are the northern and southern ends of the axis of rotation.
Reaction time
he time elapsing between the beginning of the application of a stimulus and the beginning of an organism’s reaction to it.
Magnetism
a physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects
Mass
a large body of matter with no definite shape.
Distance
the length of the space between two points.
Ticker time
The ticker timer makes dots on a paper tape every fiftieth of a second. So if a piece of tape is pulled through the timer for a second there will be 50 dots on it. Since the spaces between the dots take such a short time (1/50 s) the ticker timer is a very useful instrument for measuring short intervals of time.
Balanced forces
If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction
Deceleration
deceleration. Deceleration is a slowing down: the unexpected deceleration of your car might mean that you’ve run out of gas. Use the noun deceleration when you talk about a gradual decrease in speed
