
Solid Solid Friction
Friction Between Car and Street

Solid Liquid Friction
Friction Between Boat and sea

Solid Gaseous Friction
Friction Between Plane and Air
Surface Type - نوع السطح

Friction Force Increases on Rough Surface

Friction Force decreases on Smooth Surface

Friction Force Increases on Dry Surface

Friction Force decreases on Wet Surface
Speed - Velocity - السرعة

Friction Force Increases with Fast Objects

Friction Force decreases with Slow Objects
Size of Moving Objects - حجم العنصر المتحرك

Friction Force Increases with Large Objects

Friction Force decreases with Small Objects
Air Resistance - مقاومة الهواء

Plane Streamline Shape

Birds Streamline Shape

Parachutist
Water Resistance - مقاومة الماء

Fish Streamline Shape

Fish Streamline Shape
Decrease Friction Force - كيفية تقليل قوة الإحتكاك

Oil & Lubricants

Ball Bearing
Applications - التطبيقاتهنستفيد إيه من الدرس ده في حياتنا العملية ؟

Car Engines - محركات السيارات

Car Tires - إطارات السيارات

Matches -صناعة الكبريت

Sport Shoes - الكوتشيهات الرياضية

Car Brakes - فرامل السيارة

