What is Force
What is force?
A push or pull
The force that resists or opposes motion and causes things to slow down is called...
Friction
What happens to the motion of an object when forces acting on the object are equal and balanced?
The motion of the object does not change
Name that Law:
Every action has an equal and opposite reaction.
Newton's 3rd Law
What do we call the invisible force exerted by magnets?
Magnetic Force
What is the unit for force?
Newtons
Which force is responsible for causing leaves from a tree to fall to Earth's surface?
Gravity (or Gravitational Force)
What pattern of motion best describes Earth’s circular path around the sun?
Revolution
Name that Law:
Force = mass x acceleration
Newton's 2nd Law
What do you call the area of electric force around an electrically charged object?
Electric Force
If the sum of the forces acting on an object is 0, the forces are... (balanced or unbalanced)?
Balanced
If you are pushing a shopping cart, what type of force are you using?
Applied force
Which type of motion would rocking, swinging and bouncing be?
Periodic Motion
If something has negative acceleration, then it is...
Slowing down
True or false: Gravity is a contact force
False
If a book is sitting on a table, which direction is normal force acting?
Normal force is acting upwards
True or False: A fast moving object experiences more air resistance than a slow moving object
True
Change in velocity over time is called...
acceleration
Newton's Law that describes what happens during collisions
Newton's Third Law
A car travels 25 meters in 5 seconds. What is the car’s velocity? Show your work. (Recall: Velocity = distance ÷ time)
5 m/s
The amount of force
A person pulls one a wire that is anchored to a wall. What force pulls back on the person towards the wall?
What causes an object to move?
Unbalanced forces
Name that Law:
An object at rest will stay at rest and an object in motion will stay in motion unless acted on by an unbalanced force
Newton's 1st law
What is the difference between scalar and vector quantities?
Distance