Newtonian Forces Flashcards
What is a scalar?
A measurement that has magnitude only.
What is a vector?
A measurement that has magnitude and direction, represented by arrows.
What are Contact forces?
Forces that happen when objects are touching or in contact.
What are Non-contact forces?
Forces that act on an object over distance.
What is the Resultant force?
The overall force acting on an object which has the same effect as all the original forces acting together.
What is Elastic deformation?
An object that returns to its original shape and size after forces are removed.
What is inelastic deformation?
When an object doesn’t return to its original shape and size after forces are removed.
What are examples of a contact force? (3)
Friction, Air resistance, Tension.
What are examples of a non-contact force? (3)
Gravitational, Electrostatic, Magnetic.
What are examples of a Scalar? (4)
Speed, Distance, Temperature, time
What are examples of a vector? (4)
Velocity, displacement, force, acceleration
What is weight?
A measure of the force of gravity acting on an object.
How to calculate Weight?
Weight = mass x gravity
How to calculate force (in a spring)?
Force = Spring constant x extension
How to calculate speed?
Distance / time
How to calculate acceleration?
change in velocity / time
How to calculate resultant force?
Mass x acceleration
What is Newtons 1st Law?
An object will remain stationary unless a forces acts on it.
What is Newtons 2nd Law?
When a force is applied to an object (that has mass), it will accelerate.
What is Newtons 3rd Law?
For every action, there is an equal but opposite direction.
What is Hooke’s law?
Force is directly proportional to extension.
What is the Hooke’s Law required practical?
Calculate the length of spring on the clamp, added a suitable mass and then measure once again, keep measuring till you have enough recordings.
