Multiple Choice
Which of these are contact forces?
drag friction. gravity normal
magnetic electrical
What are drag, friction, normal?
Matter that can keep its shape
What is a solid?
Characteristics a design must have to function
What are criteria?
The pull of gravitational force exerted on an object by another object
What is weight?
Empty space with no matter
What is a vacuum?
Which of these are types of ENERGY?
Contact Balanced. Mechanical Kinetic
Potential Magnetic Drag
What are potential, mechanical, kinetic?
An equal force in the opposite direction of the action force
What is a reaction force?
A change of speed, direction, or both-can be positive or negative
What is acceleration?
The resisting force between two objects rubbing against each other
What is frictional force?
Science word for movement in matter or a change in the position of matter
What is motion?
Which of these are noncontact forces?
Drag friction. gravity normal
magnetic electrical
What are gravity, magnetic, electrical?
_________ cause energy transfers from one object to another.
What are collisions?
Device for doing work
What is a machine?
Opposite poles working in opposite ways to create a force field
What is polarity?
A push or pull on an object
What are forces?
Which of these are types of FORCES?
Contact Balanced. Mechanical Kinetic
Potential Magnetic. Drag
What are contact, balanced, mechanical?
A foil is a structure designed to produce __________.
What is lift?
Science of shaping objects to allow the smooth flow of fluids around them and reduce drag
What is streamlining?
A rebounding force created by the compression or stretching of a spring when attached to an object
What is spring force?
The upward force exerted by a fluid on a solid object placed in the fluid
What is buoyancy?
Thrust is a type of _______ force.
lift balanced reaction
What is a reaction/ Reaction force?
Reaction force that pushes an object forward
What is thrust?
A limitation or boundary for the design
What is a constraint?
A pulling force created between a rope or cable and an object
What is tension?
A graph which represents the motion of an object over a period of time
What is a motion graph?