Intro to Forces 2

The rate at which an object speeds up, which is calculated from change in velocity (m) divided by time (s*2)

The distance travelled by an object over a measured time interval

The idea that the total momentum of a system of objects after a collision is the same as the total momentum before the collision

when an object slows down

a relationship of the form “y is proportional to x”: plotting a graph of y against x will produce a straight line graph

the distance moved in a particular direction

the quantity tha measures how far an object travels in any given direction

where a push or pull on an object can cause an object to accelerate

the slope of the graph (change in y divided by change in x)

the difficulty for objects to change their velocity

The measure of how difficult it is to change an object’s velocity

a relationship of the form y is inversely proportional to 1 divided by x

the size of a quantity

the quantity that measures the amount of matter in an object (kilograms, kg and symbol m)

the SI unit of distance (symbol m)

the product of mass and velocity of an object (symbol p, kilogram metre per second or kgm/s)

SI unit of force (symbol n, 1n is the force required to give a 1kg object an acceleration of 1m/s*2)

An object at rest will remain at rest if its resultant force is at 0; an object moving at a constant speed will continue to do so in a straight line

The acceleration of an object is proportional to the resultant force acting on the object and inversely proportional to the mass of the object (equation form F=m x a)

movement in which the speed of an object changes

a measurable quantity that only has magnitude and no direction
Examples include mass, speed, time and volume

distance travelled by an object per unit of time (metres per seconds, m/s)

the movement of an object in a straight line at a constant speed

a measurable quantity that has both magnitude and direction
Examples include velocity, displacement and acceleration

The speed at which an object moves in a certain direction

how difficult it is to stop the movement of an object

Mass x velocity or kg x m/s