Newton’s Laws and forces

Created by

Rhys Parry

Cards (23)

What is Newton‘s First Law?
Interia - an object will stay at rest, or keep moving in the way it currently is unless a force is added
What do force arrows show?
The direction and magnitude of a force.
What is the resultant force?
The total/net force acting on an object
What is weight, and what unit is it measured in?
The pull of gravity of an objects mass, it is measured in Newtons (N)
What is mass, and what unit is it measured in?
Amount of matter an object contains, measured in kilograms (Kg)
What is gravitational field strength, and what unit is it measured in?
The force of gravity, measured in newtons per kilogram (N/kg)
How do you calculate the weight on an object?
Weight = Mass x Gravitational Field Strength
What is Newton’s Second Law? 
F = ma
How do you calculate resultant force?
Resultant force = Mass x Acceleration
What is Newton’s Third Law?
If body A exerts a force on body B then body B exerts an equal and opposite force on body A
What is terminal speed?
Where an object cannot go any faster, so the forces are balanced with no way to reduce or increase each other one to cause acceleration.
What is gravity?
An invisible force that pulls objects towards each other
What is up-thrust?
Buoyancy
What is thrust?
Pushing force
What is tension?
Force in a rope or cable being pulled
What is friction?
Counter force caused when two objects rub together
What is air resistance?
Force that opposes the motion of an object through the air
How do you calculate force?
Mass x acceleration
What is mass? (m)
Mass of an object depends on how much matter it contain; it never changes and is measured in kilograms (kg)
What is gravitational field strength? (g)
Measure of the force of gravity and is measured in newtons per kilogram (N/kg)
What is weight? (w)
The pull of gravity on an object’s mass; measured in newtons (N)
What is Earth’s gravitational field strength?
10 N/kg
How do you calculate Weight? (N)
Mass (kg) x Gravitational Field Strength (N/kg)