Forces

Mr. Anderson explains the concept of forces, which are pushes or pulls that cause objects to accelerate or change velocity. He discusses different types of forces, including gravitational and frictional forces, and explains how they affect motion. The video covers the concept of inertia and how it relates to motion, as well as balanced and unbalanced forces. Various scenarios are used to illustrate these concepts, including objects on Earth and celestial bodies like the moon. The video emphasizes understanding forces through changes in velocity and direction.

What causes an object to accelerate or change its velocity?

• Temperature

• Mass

• Force

• Inertia

What is the term for the resistance of an object to change its state of motion?

• Momentum

• Gravity

• Inertia

• Friction

How is force measured in a physics lab?

• In kilograms

• In joules

• In meters

• In newtons

What is the force that acts in the opposite direction to gravity when an object is at rest on a surface?

• Electric force

• Magnetic force

• Frictional force

• Normal force

When an object slides off a table, which force continues to act on it?

• Normal force

• Magnetic force

• Frictional force

• Gravitational force

What causes charged particles to move in an electric field?

• Gravitational force

• Normal force

• Magnetic force

• Electric force

What force keeps the moon in orbit around the Earth?

• Frictional force

• Electric force

• Gravitational force

• Magnetic force