Newton's Laws
What is Newton's 1st Law of Motion?(everything in motion...)
Everything at rest stays at rest, everything in motion stays in motion unless acted upon by a net external force.
What is the definition of acceleration?(velocity change)
Defined as the rate at which an object's velocity changes over time.
What is motion? How is it defined? (movement, position)
Motion is the change of position of an object over time.
It's defined by the objects movement relative to a reference point.
What is a force?(push/pull)
A force is a push or pull acting on an object, which can cause it to accelerate.
How do seat belts relate to Newton's Laws?(what do seat belts help prevent?)
Seat belts demonstrate inertia; they keep passengers from continuing forward when a car suddenly stops.
In Newton's 2nd Law how does mass, force, and acceleration relate to it?(F=ma)
This means that the acceleration of an object is directly proportional to the net force acting on it an inversely proportional to its mass.
How can you tell if an object is accelerating?(direction + speed)
An object is accelerating if it is changing its speed or direction.
How do you describe the position of an object in motion?(compare)
You describe an object's position by saying where it is compared to something else.
How do balanced and unbalanced forces affect motion?(unbalanced can cause an object's acceleration to increase)
Balanced forces do not change an objects motion, while unbalanced forces cause acceleration.
What role does friction play in everyday activities?(helps many things stop)
Friction allows us to walk without slipping an helping cars to stop.
What is an example of Newton's 3rd Law?(action-reaction)
Ex: when someone jumps off a small boat, they push down on the boat, and the boat pushes the person up into the air.
Can an object be accelerating if its speed is constant? (changing direction)
Yes an object can be accelerating even if its speed is constant if it is changing direction.
What is the difference between distance and displacement?(distance from the start to finish is what?)
Distance is how far something travels, while displacement is the straight-line distance from start to finish.
What is friction?(contact with a surface)
Friction is a force that opposes the motion of an object in contact with a surface.
How does acceleration affect a car's performance?(it can increase and decrease s....)
Acceleration affects a car's performance by determining how quickly it can increase its speed or decrease it.
What is inertia?(more mass=more inertia)
The tendency of an object to resist changes in its state of motion.
How does gravity affect the acceleration of falling objects? (they fall regardless of their mass)
Gravity affects the acceleration of falling objects by causing them to accelerate downwards at a rate of approximately 9.81 m/s squared near the Earth's surface, regardless of their mass.
How does the speed of an object change when it is in motion?(what stops an object from moving?)
An object's speed can change due to forces like friction or gravity.
What is the difference between mass and weight?(mass=mat...)
Mass is the amount of matter in an object. Weight is the force of gravity acting on that mass.
What is an example of motion in sports?(football and soccer both kick a ball)
An example of motion in sports is a soccer ball being kicked, then it moves from one position to another due to the force applied.
How do action and reaction forces work?(work in pairs)
Action and reaction forces work in pairs. For every action there is an equal and opposite reaction.
What are some common units used to measure acceleration? (_______ per hour, _________ per second)
They are: meters per second squared (m/s2) and kilometers per hour (km/h/s).
What factors can affect the motion of an object?(things that affect motion are common things we always go back to)
Factors that affect the motion are: friction, air resistance, forces acting on it, its mass, and the direction it moves.
How do you calculate net force?(directions matter, add up all the f.....)
To calculate net force, you need to add all forces acting on an object, taking into account their directions.
How do forces work in roller coasters?(they provide the necessary ________ force)
Forces work in roller coasters by providing the necessary centripetal force to keep the cars on the track through loops and turns.