Science Motion Flashcards
When one variable increases, it causes another one to increase…
For example the more massive an object the greater it’s gravitational pull
Inverse Relationship
When one variable increases, it causes another variable to DECREASE.
For example, as the distance between two objects increases the gravitational force between them decreases
Static Friction
https://www.youtube.com/watch?reload=9&v=H877C_5BMkI
The rsistance force that occurs when a ball or wheel rolls over another solid surface. Rolling friction is much weaker than sliding or static friction this explains why most forms of ground transporation use wheels. The faster an object folls the less resistance (inverse relationship)
Sliding Friction
The resistance force that occurs when a ball or wheel rolls over another solid surface.
Rolling friction is much weaker than sliding or static friction. This explains why most forms of ground transportation use wheels. The faster an object rolls, the less the resistance (inverse relationship)
Rolling Friction
The resistance force that occurs when a ball or wheel rolls over another solid surface.
Rolling friction is much weaker than sliding or static friction. This explains why most forms of ground transportation use wheels. The faster an object rolls the less resistance (inverse relationship)
THe resistance of a MOVING object to a change in its motion.
Moving inertia or mass in motion. The greater an objects mass, the greater its momentum (direct relationship)
(Law Of) Conservation of Momentum
The total amount of momentum in a system can’t be lost. For example, in a system like Newton’s Cradle when one ball hits the four balls at rest, momentum is transferred through the middle balls all the way to the last one and that causes the last one to move in the same way as the first
Fluid Friction
The resistance force that occurs when a solid object moves through a gas or liquid. Airplanes traveling through air, swimming in the water, rocket ships re-entering Earths’s atmosphere. The faster the object moves through a fluid, the greater the resistance (direct relationship).
How do factors such as gravity, friction, and change in mass effect the motion of objects?
Friction slows down the motion of a moving object
Gravity is a force that pulls two objects towards each other because of their mass
The mass of an object makes it go faster or slower
How can the motion of an object be predicted given the effect of force or change in mass?
ASK TEACHER
What is the difference between a contact force and a non contact force?
Contact is touching non contact is not – see video to explain
How do balanced and unbalanced forces affect an object’s motion?
Balanced forces do not result in any change in motion.
Unbalanced forces result in a change in motion.
How does gravity affect the motion of all objects?
The force of gravity pulls objects down to earth.
The force of gravity, like all other forces, can cause changes in the speed of objects. As an object falls, its speed will continually increase as Earth’s gravity continually pulls it downward.
How does a change/difference in mass change the motion of an object?
Heavier objects (with more mass) are more difficult to move and stop. Heavier objects (with more mass) resist change more then lighter objects. The more massive an object the harder it is to stop.
What causes friction?
Friction is a force that resists motion between two objects of materials.
Friction results from two surfaces rubbing against each other or moving relative to one another
How does friction effect the motion of all objects?
The force of friction opposes the motion of an object causing moving objects to lose energy and slow down.
Diagram an example of net force on an object.
https://sciencing.com/net-force-definition-equation-how-to-calculate-13720445.html
The net force is defined as is the sum of all the forces acting on an object. Net force can accelerate a mass. Some other force acts on a body either at rest or motion. The net force is a term used in a system when there is a significant number of forces.
