Forces Flashcards
Name some ways forces can affect objects
- start moving
- move faster
- move slower
- stop moving
- change direction
- change shape
Answer the following
Force causes_______
Forces causes Acceleration
What is the formula for calculating speed ?
Speed= distance/time
What does acceleration do ?
Acceleration =change in speed/change in time
What is the formula for time ?
Time= distance/speed
What is the formula for distance?
Distance= speed X time
What is thrust?
This can be any driving force
it can be pull or push
What is lift?
This is the force of motion required to raise an object through a fluid
(gas or liquid)
What is air resistance?
This is a force which acts to oppose motion in the air it can slow objects down when they are moving against it
What is friction?
This force acts on objects when they are in contact with a surface such as the ground it can be reduced by insuring both surfaces are smooth
What is weight?
Interaction of mass with gravity a downward force that pulls towards the centre of gravity. On earth it is a force that pulls towards the centre of the earth
What happens when forces are balanced
When forces are balanced equal an object is stationary or travelling at a constant speed. Balanced forces are equal in magnitude and oppose direction
What happens when forces are unbalanced
Unbalanced forces cause acceleration (a change in speed/direction)
