Science - Forces and Motion Flashcards
How do you calculate speed
distance over time
What is instantaneous speed
the speed of the object over that exact moment
What is average speed
the overall speed of a object over the whole journey
How do you solve acceleration
change in velocity over change in time
What is a force
A force is defined as a push, pull, or a twist
What is force measured in
Newtons
What is mass
the amount of matter contained in an object
What is the unit for mass
kg
What is Newtons 1st Law of Motion
An object will remain at rest or continue at constant speed as long the forces are balanced
How do you calculate the weight
Mass (kg) x Gravitational Field Strength (n/kg)
What is Newtons Second Law
A force will change speed of an object. The stronger the force, the faster the change in speed
How do you calculate force
mass (kg) x acceleration (ms-2)
What is Newtons 3rd law
For every action there is an equal and opposite reaction
What are forms of energy
Chemical potential energy = heat
Gravitational potential energy = kinetic
Magnetic potential energy = light
Nuclear potential energy = sound
Elastic potential energy = electric
Mechanical potential energy = electromagnetic
What is work
the amount of energy used to move an object
