Newton's 1st Law
Law of inertia
What is the second law known as?
Law of acceleration
Newton's 3rd law is known as...
Law of action/reaction
force exerted on a structure by an agent external to the structure
External forces
What is momentum dependent on?
speed and mass
Newton's first law states that an object at rest or in motion will remain unless...
an unbalanced force acts on that object
Acceleration and mass have an ____________ relationship.
inverse or opposite
What does Newton's 3rd law state?
Every time there is an action force, there is a reaction force of equal size and acts in the opposite direction.
sum of all forces acting on an object
net force
How does momentum transfer?
through collisions
What is inertia?
property of matter that resists changes in its motion
How do I find the acceleration of an object?
a=F/m
On a diagram, the ____________ and ___________ of the force can be seen by the arrows.
magnitude, direction
quantities described only by their magnitudes; do not have any direction associated with them
scalar quantities
What are the primary factors that allow Soap Box Derby cars to move down the hill without an engine?
Gravity, momentum, and aerodynamics
What is velocity?
speed and direction
direct
What would be the reaction force of a ball bouncing on the ground?
earth pushing on the ball
quantities described by both magnitude and corresponding direction
vector quantities
When an index card is quickly pulled from under a penny, the card moves out of the way, but the penny remains in place. Why and what law of motion is being applied?
Good explanation
What property of an object determines how much inertia it has?
mass
How are force, mass, and acceleration measured? (units of measurement)
Newton's 3rd laws states that forces ALWAYS occur in?
Pairs
state of an object when completely at rest
static equilibrium
If a person standing on a boat in water and jumps off to the right, what are the action and reaction forces?
he pushes on the boat to the left and the boat pushes on him to the right