Newton's 1st Law
What is inertia?
Inertia is an object's resistance to change
What is the formula for the Second Law?
What is Newton's Third Law?
For every action, there is an equal and opposite reaction.
True or False: An object in motion will eventually stop due to its inertia.
FALSE
Newton's First Law states that an object at rest stays at rest unless acted upon by an external __.
force
Give an example of the First Law.
An object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force.
How does mass affect acceleration?
As the mass of an object increases, when the force applied stays the same, the object's acceleration will decrease.
Give an example of action-reaction forces.
Multiple responses accepted.
True or False: The forces acting on an object must be balanced for it to remain at rest.
TRUE
The tendency of an object to resist changes in its motion is called __.
inertia
What happens to a soccer ball at rest?
The soccer ball will stay at rest unless acted upon by an outside force.
Describe a situation involving force, mass, and acceleration.
Multiple responses accepted.
How does jumping illustrate the Third Law?
your legs apply a force to the ground, and the ground applies an equal and opposite reaction force that propels you into the air.
True or False: Mass and weight are the same thing.
FALSE. Weight changes depending on the force due to gravity.
If two forces of 6 N and 4 N act on an object in opposite directions, the net force is __ N.
2N
How does friction affect motion according to the First Law?
Friction is the force that opposes motion. It will slow down an object in motion, eventually causing it to stop moving.
What is the relationship between net force and acceleration?
As the net force applied on an object increases, the acceleration of that object increases.
Explain the concept of equal and opposite forces.
Whenever one object exerts a force on another object, the second object exerts an equal and opposite on the first.
True or False: In a vacuum, all objects fall at the same rate.
TRUE
According to Newton's Second Law, if the force is doubled, the acceleration will __.
double
Explain the concept of balanced forces.
Balanced forces are when multiple forces acting on an object are equal in magnitude but opposite in direction, effectively canceling each other out and resulting in no net force. The object will remain at rest or continue moving at a constant speed.
What happens if the net force is zero?
The object will remain at rest or continue moving at a constant speed.
Why is the Third Law important in rocket propulsion?
The gases being released downward, push the rocket upward.
True or False: A satellite in orbit is not accelerating.
FALSE
A greater mass results in __ acceleration for a given force.
less