Vocab
A push or a pull that affects and object is called a
force
An object in motion will
An object at rest
Stay in motion
Will stay at rest
A contact force that involves two surfaces rubbing on one another in opposite directions
friction
it is energy in motion
If I needed to increase the friction exerted on an object what could I do
Increase the MASS or the ROUGHNESS of the surface
A change in position is called
Motion
Sir Isaac Newton
Forces that cause a change in motion are called..
unbalanced forces
a train would require more force and more energy to get moving/stopped than a bicycle demonstrates which law of motion
The second law of motion
The fact that the rockets fire downward toward the earth and the shuttle shoots into the sky demonstrates which law of motion
The third law of motion
Velocity measures what 2 things
Speed and Direction
The second law
A force that connects or touches an object is called a
contact force
New energy can be created at nuclear power plants
False
The forces on it are BALANCED or
an object at rest will remain at rest
Two forces that cannot be avoided on the earth are
gravity and friction
Complete the phrase:
For every action
there is an equal and opposite reaction
In a game of tug-o-war, what happens when the forces exerted by Team A and Team B are balanced?
neither team wins
Baseball players load up with their bats behind them to maximize what kind of energy
potential energy
Why is the vacuum of space a great place to witness the laws of motion
Because there is no friction or gravity
Acceleration is a change in...
Speed or Direction or Both
The property that an object has that will keep an object in motion that is in motion
or at rest that is already at rest
inertia
An object that is accelerating is acted on by a an _____________ force.
unbalanced
What is the conservation of the Law of Energy (and matter)
Energy cannot be created or destroyed
The idea that a baseball flies further and faster than a softball demonstrates which law of motion?
The second law of motion