How Will it Move?

non-contact, at-a-distance force

• an object feels a force from an object it is NOT touching

• a force that requires physical contact between objects

• a force that can only be felt when objects collide

• a force that acts only in a vacuum

4 forces on a plane

• weight, lift, thrust, drag

• gravity, friction, lift, thrust

• thrust, drag, inertia, lift

• weight, drag, lift, momentum

air resistance/drag

• a pushing force from air that acts in the opposite direction of motion

• a pulling force that accelerates an object forward

• a force that increases with the speed of an object

• a force that decreases the speed of an object in motion

normal force

• the force that opposes gravity on an object

• the force that a surface exerts perpendicular to an object pressing on it

• the force that causes an object to accelerate

• the frictional force acting on a moving object

reinforce

• when forces are in the same direction and their amounts add together

• when forces are in opposite directions and cancel each other out

• when forces are perpendicular to each other

• when forces are unequal and do not affect each other

gravitational potential energy

• the energy an object has due to its mass and position in a gravitational field

• the energy an object has due to its speed and direction

• the energy stored in an object due to its temperature

• the energy an object has due to its color and texture

speed

• how quickly or slowly something is moving (rate = distance traveled per unit of time)

• the distance covered in a straight line

• the time taken to travel a certain distance

• the maximum velocity of an object

rolling friction

• a pushing force that a round object experiences when it moves across a surface

• the resistance encountered by an object moving through a fluid

• the force that opposes the motion of an object sliding on a surface

• the frictional force acting on an object at rest

inertia

• the property of an object that resists changes to its motion; proportional to mass

• the force that causes an object to move in a circular path

• the tendency of an object to remain at rest or in uniform motion unless acted upon by an external force

• the measure of an object's resistance to acceleration when a force is applied

velocity

• speed and direction (meters/second)

• speed only (meters/second)

• distance over time (meters)

• acceleration (meters/second²)