5 Written Questions
5 Matching Questions
- Unbalanced Forces
- Newton's 2nd Law of Motion
- a the force that slows down objects by rubbing against them
- b When 1 object exerts more force on another object and movement occurs. Forces may be in the same direction or opposite directions, but there is movement. There is a Net Force.
- c the flow of electrically charged particles, electrons, between objects.
- d the speed & direction of an object's motion
- e the relationship between mass, acceleration & force. Force = Mass X Acceler.
5 Multiple Choice Questions
- a force that moves an object; no work is done if an object doesn't move. Force X Distance = Work
- An object in motion will stay in motion unless a force acts on it. An object at rest will stay at rest unless a force acts on it.(No Net Force)
- When a force acts on an object and causes it to move (may be in the same direction or in opposite directions).
- When the 1st object puts a force on a 2nd object, the 2nd object will put a force back on the 1st object as well. Exam: using a hammer to pound a nail, the hammer is creating a force on the nail and the nail is creating a force back on the hammer.
- a machine that consists of a few parts.
5 True/False Questions
Inertia → Force is measured in units called Newtons (not the cookie)
Force → a push or pull that acts on an object
Power → work is done in a certain time. Work divided by time = power; measured in Watts
Balanced Forces → When 1 object exerts more force on another object and movement occurs. Forces may be in the same direction or opposite directions, but there is movement. There is a Net Force.
Machine → a tool or device that makes work easier by changing the direction or the amount of force needed to move an object; DOES NOT make less work.