Balanced Forces and Newton's Laws in Action

The video explains Newton's first law of motion, focusing on balanced and unbalanced forces. It uses the example of a horse to illustrate how gravity and reaction forces balance each other, and how driving force, friction, and air resistance interact. When forces are balanced, an object remains stationary or moves at constant velocity. Unbalanced forces cause acceleration or deceleration.

What does Newton's First Law of Motion imply about an object with balanced forces acting on it?

• It will change direction.

• It will increase in mass.

• It will accelerate.

• It will remain stationary or move at a constant velocity.

In the example of the horse, what force acts towards the center of the Earth?

• Friction

• Air resistance

• Gravity

• Driving force

What is the role of the reaction force in the context of balanced forces?

• It increases the horse's speed.

• It acts in the same direction as gravity.

• It opposes the force of gravity.

• It causes the horse to sink into the ground.

Which force is responsible for opposing the horse's weight?

• Air resistance

• Reaction force

• Friction

• Driving force

Which forces oppose the driving force when the horse is moving at a constant velocity?

• Only air resistance

• Friction and air resistance

• Only friction

• Gravity and reaction force

What happens to the horse's motion when the driving force is greater than the opposing forces?

• The horse maintains constant velocity.

• The horse accelerates.

• The horse moves backward.

• The horse stops moving.

What is the effect of balanced forces on an object's velocity?

• The object will maintain its current velocity.

• The object will decelerate.

• The object will change direction.

• The object will accelerate.

What is the result of unbalanced forces acting on an object?

• The object will increase in mass.

• The object will either accelerate or decelerate.

• The object will travel at a constant velocity.

• The object will remain stationary.

Which of the following is NOT a balanced force scenario?

• A plane flying at a steady altitude.

• A horse accelerating.

• A book resting on a table.

• A car moving at a constant speed.

What happens to an object when the forces acting on it are balanced?

• It will remain stationary or move at a constant speed.

• It will change its shape.

• It will decelerate.

• It will accelerate.