Force & Motion

Force

• a pull or push that is applied to an object.

• a type of energy that can be converted into work.

• the mass of an object multiplied by its velocity.

• a measure of the distance between two points.

Newton’s 3rd Law

• For every action, there is a reaction of equal magnitude and opposite direction.

• An object at rest will stay at rest unless acted upon by an unbalanced force.

• The acceleration of an object is directly proportional to the net force acting on it.

• Energy cannot be created or destroyed, only transformed.

inertia

• an object’s resistance to a change in motion (still things want to stay still, moving things wish to stay moving)

• the force that causes an object to accelerate

• the tendency of an object to fall towards the Earth

• the speed of an object in a given direction

weight

• the force of gravity on an object.

• the mass of an object in kilograms.

• the volume of an object in liters.

• the density of an object in grams per cubic centimeter.

gravity

• a force that exists between any two objects that have mass.

• a type of energy that can be harnessed for power.

• a phenomenon that only occurs on Earth.

• a measure of the weight of an object.

speed

• distance traveled per unit of time.

• the rate of change of position.

• the total distance covered in a journey.

• the time taken to cover a specific distance.

mass

• the amount of matter in an object

• the weight of an object in a vacuum

• the volume of an object

• the density of an object

friction

• a force that opposes the motion of the body across a surface or through a gas or liquid.

• a force that accelerates the motion of an object in a straight line.

• a force that increases the speed of an object moving through a fluid.

• a force that acts perpendicular to the direction of motion.

motion

• a change in the position of an object compared to another object.

• the speed of an object in a straight line.

• the force applied to an object at rest.

• the distance traveled by an object over time.

Newton’s 2nd Law

• Acceleration = Force + Mass

• Acceleration = Force/Mass

• Force = Mass/Acceleration

• Force = Acceleration x Mass