EVERYDAY SCIENCE

Detailed explanation-1: -This law is also known as the law of inertia. Friction is an external force that causes an object to slow down. Inertia is the tendency of an object to remain at rest or remain in motion. Inertia is related to an object’s mass.

Detailed explanation-2: -As he reaches the bottom, friction causes him to slow down and stop.

Detailed explanation-3: -Friction is the force that acts to resist sliding between two surfaces that are touching. It can slow down or stop the motion of an object. The slowing force of friction always acts in the direction opposite to the force causing the motion.

Detailed explanation-4: -When a skater stands still on their board, three forces are acting on the skateboard. First, gravity pulls the board toward Earth. Second, the weight of the skater pushes down on the board. And third, the ground pushes up on the skateboard.

Detailed explanation-5: -Friction is a force that slows down the motion of a moving object. Think about a land slide. Once a slide begins the rock, earth and debris will stay in motion until friction between the material and the ground slows the movement. Eventually, friction and gravity will work together to stop the motion of the slide.