Friction is a force that opposes motion, slowing things down by rubbing surfaces together, affecting objects like bikes and scooters. Gravity, a pulling force, keeps objects on the ground, influencing everything from falling objects to planetary orbits.

Friction, a force that opposes motion, is present when two surfaces rub against each other, such as when using brakes on a bike to slow down. It occurs due to surfaces not being perfectly smooth, with rougher surfaces creating more friction.

Gravity, a pulling force that keeps us grounded, is essential for maintaining the Earth's orbit around the sun. Without gravity, objects would float away, emphasizing its crucial role in our daily activities and interactions with the physical world.