The Science of Motion: Understanding Forces and Friction

How does friction affect the motion of objects?

Friction acts as a resistance force that opposes the motion of objects, causing them to slow down or come to a stop.

What is the role of gravity in changing the motion of objects in space?

Gravity can act as a net force and change the motion of an object in space when it enters the gravitational field of a planet.

Can friction be completely eliminated?

Friction can be reduced but not completely eliminated, as it is a fundamental force present in all interactions between surfaces.

How does acceleration relate to the net force acting on an object?

Acceleration is perpendicular to the object, and the net force is always in the direction of the acceleration, as described by Newton's second law.

What is the significance of an object's initial motion in the absence of external forces?

An object in space will continue to travel in the direction set by its initial motion unless acted upon by a net force, showcasing the concept of inertia.