Physics Unit 1 Flashcard

Front

What is a balanced force?

Back

A balanced force is a force pair that has a net force of zero, meaning that the forces acting on an object are equal in size and opposite in direction.

Front

How do you calculate force using mass and acceleration?

Back

Force can be calculated using Newton's second law of motion: Force (F) = mass (m) × acceleration (a). For example, a 20 kg bike accelerating at 10 m/s² has a force of 200 Newtons.

Front

What does it mean when the net force is zero?

Back

When the net force is zero, it means that all the forces acting on an object are balanced, resulting in no change in motion.

Front

What is the definition of force in physics?

Back

Force is defined as a push or pull acting on an object.

Front

How does height affect potential energy?

Back

Potential energy increases with height; the higher an object is positioned, the more potential energy it has due to its position in a gravitational field.

Front

What is the formula for calculating potential energy?

Back

Potential energy (PE) can be calculated using the formula: PE = mass (m) × gravitational acceleration (g) × height (h).

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces result in a net force of zero and no change in motion, while unbalanced forces result in a net force greater than zero, causing an object to accelerate.

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force in the SI system is the Newton (N).

Front

What is an example of an unbalanced force?

Back

An example of an unbalanced force is when a person pushes a stationary car, causing it to move in the direction of the push.

Front

What role does friction play in motion?

Back

Friction is a force that opposes motion between two surfaces in contact, affecting the acceleration and speed of moving objects.