PUSH
When you push an object it moves away from you.
PULL
When you pull an object you make it move toward you.
FORCE
A force makes things move and go fast, slow down and change direction.
UNBALANCED FORCES
Unbalanced forces will make an object want to move or accelerate away
ACCELERATE
If we apply force to a moving object we can get it to move faster we get it to accelerate
FRICTION
Friction is the force produced between two surfaces as they rub against each other friction slows objects down or makes them stop.
AIR RESISTANCE
Air resistance slows things down as they travel through air . is is because air contains millions and millions of molecules that try to block the way, think of how hard it is to walk or even run through water waste deep
BALANCED FORCES
When an object is balanced it will stay still or keep moving in the same direction. An example is when people of exactly the same size or weight are on a see-saw they will not move unless extra force is applied.
POTENTIAL ENERGY
This is the stored energy of an object in relation to its position compared with other objects. If it is up high and is dropped or pushed it will be pulled down by earth's gravitational force.
MOTION
This is a change in an object's position over a period of time. It is described in terms of displacement, distance, speed, acceleration and velocity.
MASS
This is about how much stuff or is in an object. It is not the same as weight as, for example, an object on the Moon would weigh less because of lower gravitational forces but it would the same mass.
GRAVITY
This is the force which pulls or attracts objects to the centre of the earth.