Unit 3 Force and Motion VOCABULARY REVIEW (20 words)

Front

What is the 2nd Law of Motion and how is acceleration defined?

Back

The 2nd Law of Motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Acceleration (a) is defined as the change in velocity divided by the time required for the change, expressed as a = f/m, with units of m/s².

Tags

NGSS.HS-PS2-1

Front

What are unbalanced forces and how do they affect motion?

Back

Unbalanced forces refer to a set of forces acting on an object that do not cancel each other out, resulting in a net force that causes the object to accelerate or change its motion.

Tags

NGSS.MS-PS2-2

Front

Define gravity and its role in motion.

Back

Gravity is the force that attracts a body toward the center of the Earth or any other physical body having mass. It is a fundamental force that affects the motion of objects, pulling them toward one another.

Tags

NGSS.MS-PS2-4

Front

What is rolling friction and how does it differ from static friction?

Back

Rolling friction is the force that resists the motion of one solid rolling on another. It is generally less than static friction, which is the force that must be overcome to start an object moving from rest.

Front

Explain balanced forces and their effect on an object's motion.

Back

Balanced forces are forces acting on an object that are equal in magnitude but opposite in direction, resulting in no net force. This means the object remains at rest or continues to move at a constant velocity.

Front

What is the formula for calculating force?

Back

The formula for calculating force is F = m * a, where F is the force, m is the mass of the object, and a is the acceleration.

Tags

NGSS.MS-PS2-2

Front

How does mass affect acceleration according to Newton's 2nd Law?

Back

According to Newton's 2nd Law, as mass increases, acceleration decreases for a given force. This means that heavier objects require more force to achieve the same acceleration as lighter objects.

Tags

NGSS.MS-PS2-2

Front

What is the difference between mass and weight?

Back

Mass is a measure of the amount of matter in an object, typically measured in kilograms, while weight is the force exerted by gravity on that mass, measured in newtons (N). Weight can change depending on the gravitational field.

Front

Describe the concept of net force and its significance in motion.

Back

Net force is the vector sum of all the forces acting on an object. It determines the object's acceleration and direction of motion. If the net force is zero, the object remains in its current state of motion.

Tags

NGSS.MS-PS2-2

Front

What is inertia and how does it relate to motion?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion continues in motion at a constant velocity unless acted upon by an external force.