Newton's First Law
What is Newton's First Law of motion?
Newton's First Law states that an object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.
What are balanced forces?
Balanced forces are two or more forces acting on an object that cancel each other out, resulting in no change in motion.
What are unbalanced forces?
Unbalanced forces are two or more forces acting on an object that do not cancel each other out, causing a change in motion.
What is net force?
Net force is the total force acting on an object after all the forces are combined.
What is a force?
A force is a push or pull on an object that can cause it to move, stop, or change direction.
What does inertia mean?
Inertia is the tendency of an object to resist changes in its state of motion.
Give an example of balanced forces in everyday life.
...
Give an example of unbalanced forces in everyday life.
...
How do you calculate net force?
You calculate net force by adding all the forces acting in the same direction and subtracting the forces acting in the opposite direction.
What are two types of forces we experience everyday?
Gravity and Friction.
What happens to an object at rest according to this law?
According to this law, an object at rest will remain at rest unless acted upon by an external force.
What happens when forces are balanced?
When forces are balanced, the object remains at rest or continues to move at a constant speed in the same direction.
True or False: All forces acting on an object will always be in the same direction as the object's motion.
False. The total net force affects an object's motion; unbalanced forces determine the speed and/or direction of an object.
What is the net force when two equal forces act in opposite directions?
The net force is zero when two equal forces act in opposite directions.
How do forces affect the motion of an object?
Forces can cause an object to start moving, stop moving, or change its speed or direction.
How does this law apply to a moving car?
A moving car will continue to move in a straight line at a constant speed unless forces like friction or brakes act on it.
How can you tell if forces are balanced?
You can tell if forces are balanced if the object does not accelerate or change its state of motion.
What is acceleration?
The rate of change in an object's speed or direction.
What happens if the net force is greater than zero?
If the net force is greater than zero, the object will accelerate in the direction of the net force.
What role does friction play in forces?
Friction is a force that opposes motion, slowing down or stopping moving objects.
How does a seatbelt relate to Newton's First Law?
A seatbelt helps to keep passengers in their seats by applying an unbalanced force, preventing them from continuing to move forward when the car stops suddenly.
Yes. Unbalanced forces will cause a change in motion, speed, or direction.
What happens when you push a stationary object?
When you push a stationary object, if the force you apply is greater than any opposing forces (like friction), the object will move.
How does net force affect an object's acceleration?
An object with less net force will move faster than an object with more net force because there are more forces acting on it.
Describe how gravity acts on falling objects.
Gravity pulls falling objects toward the Earth, causing them to accelerate downward.