Understanding Newton's First Law of Motion

The video demonstrates Newton's First Law of Motion, explaining that an object at rest stays at rest unless acted upon by an unbalanced force. The teacher uses a simple setup with cups and a ball to illustrate how gravity acts as the unbalanced force, causing the ball to fall when the middle cup is removed. The demonstration highlights the principle that only the object acted upon by a force will move, while others remain stationary.

What does Newton's First Law of Motion state about an object at rest?

• It will start moving on its own.

• It will stay at rest unless acted upon by an unbalanced force.

• It will always be in motion.

• It will change its position randomly.

In the demonstration, what happens to the ball when the middle cup is removed?

• The ball bounces upwards.

• The ball is acted upon by gravity and falls.

• The ball stays in place.

• The ball rolls away.

What force causes the ball to fall into the cup?

• Frictional force

• Gravitational force

• Electrostatic force

• Magnetic force

Why do the other objects remain in their initial state during the demonstration?

• They are glued to the table.

• They are not acted upon by any external force.

• They are heavier than the ball.

• They are in a vacuum.

What is the key concept demonstrated in the video?

• The force of gravity is stronger than any other force.

• Objects at rest stay at rest unless acted upon by an unbalanced force.

• Objects in motion stay in motion.

• For every action, there is an equal and opposite reaction.