Newton's 1st Law
The tendency of an object to resist a change in motion.
What is inertia?
Formula used to calculate the amount of force needed to accelerate an object a certain amount.
What is f=ma?
For every action, there is an equal and opposite reaction.
What is Newton's 3rd Law?
Friction always acts in this direction to slow down motion.
What is the opposite direction of the objects motion?
A push or pull resulting in a change in an object's motion
What is force?
According to Newton's First Law, an object at rest or constant motion will only change its state when acted upon by this.
What is an unbalanced force?
The force that acts on a 10 Kg object that accelerates at a rate of 2 m/s2.
These forces are always equal in size and opposite in direction.
What is action-reaction forces/pairs?
This type of friction ensures you don't slip when you walk in the halls.
What is static friction?
The net force acting on the box if a person is pushing the box with 5N of force to the right and another person is pulling the box with 15N of force to the right.
What is 20N?
This property of an object determines its inertia.
What is mass?
The mass of an object that accelerates 4 m/s2 when 100N of force is applied to it.
What is 25 g?
The reaction force when a bat hits a baseball.
This type of friction occurs between the wheels of your bike and the road.
What is rolling friction?
The type of force acting on an object going at a constant speed in a straight line.
What is balanced?
You slam on the brakes in a car and a book flies off the dashboard. This is because of this property of the book.
What is inertia?
If two objects have the same force applied, why does the one with a larger mass accelerate less?
What is it needs more force to accelerate the same amount as the smaller mass?
Despite equal forces, the bug experiences a much larger acceleration than the bus.
What is the result of a bug colliding with a moving bus?
The force that prevents motion until a maximum value (amount of force) is reached.
What is static friction?
Because the forces are not equal, an object acted upon by an unbalanced force will always do this.
What is accelerate (change speed or direction)?
This is what happens to your body when a car makes a sharp turn, because your body wants to continue going straight.
What is move to the side (stay in place)?
Occurs to an object when a larger force is applied.
What is more acceleration?
When objects with different masses collide, they experience this.
What is equal forces, different acceleration?
The type of friction that is usually weakest between two surfaces in motion.
What is rolling friction?
Two classes are playing tug of war. Ms. Rai’s class pulls with a force of 50 N. Ms. Allen’s class pulls with a force of 45 N in the opposite direction. What is the net force?
What is 5N?