Friction
Inertia
The friction between the foot and the ground creates a force that opposes the motion of the skateboard, causing it to slow down. This friction converts the kinetic energy of the skateboard into thermal energy.
The limiting frictional force is the force that slows down the tennis ball on the roller coaster.
When the skateboarder pushes on the ground with her foot, she exerts a force on the ground in one direction, causing the ground to exert an equal and opposite reaction force on her in the opposite direction. This reaction force propels the skateboard and the skateboarder forward, resulting in acceleration down the sidewalk.
Friction.
gravity
water resistance
friction
friction
Gravity is the force that causes objects to fall, while air resistance or drag slows down a falling object as it moves through the air. The larger the surface area of the object, the greater the air resistance force, which opposes the force of gravity and slows the object down.
The force that slows down moving objects in water is called drag force. Drag force occurs due to the resistance of water molecules as they collide with the moving object, causing it to slow down.
Air resistance or upthrust :)