Dynamics: What are Forces?

The video tutorial introduces key physics terms like work, energy, and force, emphasizing their specific definitions in physics. It transitions from kinematics to dynamics, focusing on the study of forces and their effects on motion. The tutorial explains forces, vectors, and freebody diagrams, and distinguishes between contact and non-contact forces, including examples. It introduces the four fundamental forces and the unit of force, Newton, named after Sir Isaac Newton, who formulated the laws of motion.

What is the primary focus of dynamics in physics?

• The study of forces and their effects on motion

• The study of light and optics

• The study of energy transformations

• The study of the structure of matter

Which of the following is an example of a contact force?

• Electrostatic force

• Pushing a shopping cart

• Magnetic attraction

• Gravitational pull of the Earth

What is a non-contact force also known as in classical physics?

• Direct force

• Field force

• Tactile force

• Surface force

Which of the following is NOT one of the four fundamental forces?

• Electromagnetic force

• Strong nuclear force

• Gravitational force

• Frictional force

What is the SI unit of force named after Sir Isaac Newton?

• Watt

• Newton

• Pascal

• Joule