Newton's Laws
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.
What is Newton's First Law (Inertia)?
A force of attraction between two masses, often observed as weight on Earth.
What is Gravity/Gravitational Force
A push or pull on an object, measured in Newtons (N). It can be contact (friction, tension) or non-contact (gravity).
What is a force?
When an object moves at __________ _________, the forces acting on it are balanced, and the net force is zero.
What is constant velocity?
The acceleration of an object depends on the mass and the force acting on it.
F=ma
What is Newton's Second Law?
A force that opposes motion between two surfaces in contact.
What is Friction/Frictional Force
The sum of all forces acting on an object. If this is zero, the object will remain at rest or move at constant velocity (equilibrium). If this is NOT zero, the object will accelerate.
What is Net Force?
An object in __________ has no acceleration and maintains its state of motion (constant velocity or rest).
What is equilibrium?
For every action, there is an equal and opposite reaction.
What is Newton's Third Law?
A pulling force transmitted through a string or rope.
What is Tension/Tensional Force?
Objects with greater mass require more force to achieve the same ________ as lighter objects.
What is acceleration?
Forces are equal in magnitude and opposite in direction, resulting in no change in motion.
What is a 3rd-law-pair?
The tendency of an object to resist changes in motion.
What is Inertia?
The perpendicular contact force exerted by a surface on an object.
What is the Normal Force?
Under equal ________, lighter objects accelerate more than heavier objects.
What is forces?
When the net force is not zero, causing an object to accelerate in the direction of the larger force.
Unbalanced forces