vocabulary
A push or pull that can change the motion of an object
Force
How do cars move?
As the wheels of the car spin backwards, they push the road backwards.
For every action there is an equal and opposite reaction.
Newtons Third Law
What is motion?
Motion is the change in position of an object overtime.
What is a balanced force?
A balanced force is forces of equal magnitude but are opposite in direction.
An act or process of changing place or position
Motion
What force makes us move?
Gravity, friction, and muscular forces are the primary forces that make us move.
Inertia is related to which of the following laws of motion?
Newton's First Law
What is force?
Force is a push or pull that can cause an object with mass to change its velocity which includes to begin moving from a state of rest.
What is an unbalanced force?
An unbalanced force is a force that, when acting on an object, results in a net force that is not equal to zero, causing the object to accelerate or change its motion
The force that resists motion between two surfaces that are in contact.
Friction
How does rain and snow come down?
Rain forms when water droplets become too heavy to stay suspended in warmer air, while snow forms when ice crystals, formed in colder conditions, become heavy enough to fall.
An object at rest remains at rest or if in motion remains in motion at an constant velocity unless acted on by a net external force.
Newtons First Law
what happens when pushing a box?
A force is applied to the box, causing it to move.
Give an example of unbalanced forces in real life
A soccer ball being kicked (the force of the kick is greater than the force of friction and gravity).
a vector measurement of the rate and direction of motion.
Velocity
What force makes the wind move?
pressure gradient force
Which of the following Newton's laws of motion can be used to calculate the force on a body?
Newton's Second Law
Friction slowing down a moving object
Friction opposes motion and causes objects to slow down or stop.
What happens to an object when balanced forces act on it?
The object will remain at rest (if initially at rest) or continue moving at a constant speed and direction (if initially moving).
The rate at which an object velocity changes over time
Acceleration
What force pulls us back down after we jump up?
Gravity
The time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
Newtons Second Law
What are the key concepts related to force and motion?
The tendency of an object to resist changes in its state of motion (either at rest or moving at a constant velocity
How can you tell if forces acting on an object are balanced or unbalanced
if the object remains at rest or moves at a constant speed and direction the forces are balanced if the object accelerate or decelerate or changes direction the forces are unbalance.