Unit 07: Forces

What is the definition of force?

• The maximum speed an object can reach when falling through a substance.

• A push or pull.

• The tendency of an object to resist change in motion.

• A friction-like force opposing the motion of objects that move through the air.

What does net force refer to?

• The gravitational force exerted on an object.

• The force exerted toward the center of a curved path.

• When two or more forces act upon an object at the same time, and the forces combine.

• The attractive force between two objects that depend on the mass of each object and the distance between them.

What is friction?

• The force exerted toward the center of a curved path.

• The force that opposes the sliding motion of two surfaces that are touching each other.

• A region of space that has a physical quantity/force at every point.

• The tendency of an object to resist change in motion.

What is gravity?

• The force exerted toward the center of a curved path.

• The maximum speed an object can reach when falling through a substance.

• The friction-like force opposing the motion of objects that move through the air.

• An attractive force between two objects that depend on the mass of each object and the distance between them.

What is the gravitational field?

• The maximum speed an object can reach when falling through a substance.

• The force exerted toward the center of a curved path.

• A region of space that has a physical quantity/force at every point.

• The tendency of an object to resist change in motion.

What is the difference between mass and weight?

• Mass is a measure of the amount of matter in an object, while weight is the gravitational force exerted on an object.

• Mass is the gravitational force exerted on an object, while weight is a measure of the amount of matter in an object.

• Mass is the force exerted toward the center of a curved path, while weight is the maximum speed an object can reach when falling through a substance.

• Mass is the tendency of an object to resist change in motion, while weight is a property of a moving object that is equal to the product of its mass and velocity.

What is inertia?

• The maximum speed an object can reach when falling through a substance.

• The force exerted toward the center of a curved path.

• The tendency of an object to resist change in motion.

• The friction-like force opposing the motion of objects that move through the air.

What is air resistance?

• The maximum speed an object can reach when falling through a substance.

• The force exerted toward the center of a curved path.

• A friction-like force opposing the motion of objects that move through the air.

• The tendency of an object to resist change in motion.

What is terminal velocity?

• The maximum speed an object can reach when falling through a substance.

• The force exerted toward the center of a curved path.

• The tendency of an object to resist change in motion.

• A friction-like force opposing the motion of objects that move through the air.

What is free fall?

• The maximum speed an object can reach when falling through a substance.

• The force exerted toward the center of a curved path.

• When gravity is the only force acting on an object when there is no air resistance.

• A friction-like force opposing the motion of objects that move through the air.