Forces

1. Newton's First Law

1.1. Brakes decelerating car

1.2. Carpet slowing down sliding box

2. Newton's Second Law

2.1. It takes more force to accelerate a car the same rate as a golf ball

3. Newton's Third Law

3.1. Gravitational force of Earth on falling graduation cap

3.1.1. Gravitational force of falling graduation cap on Earth

3.2. Friction force of carpet on foot

3.2.1. Friction force of foot on carpet

4. Contact Force

4.1. Applied

4.1.1. Pushing a drawer shut

4.2. Friction

4.2.1. Floor resisting table sliding

4.3. Normal

4.3.1. Surface of table top holding up clock

4.4. Tension

4.4.1. Cable holding an elevator

5. Field Force

5.1. Magnetic

5.1.1. Bar magnet attracting paperclips

5.2. Electrostatic

5.2.1. Positive-charged nucleus attracting negative-charged electron

5.3. Nuclear

5.3.1. Protons and neutrons held together in nucleus

5.4. Gravitational

5.4.1. Earth's gravitational force on the moon

5.4.2. Sun's gravitational force on Earth