Physics Flashcard on Forces and Motion

Front

What is the definition of force in physics?

Back

A force is a push or pull acting upon an object as a result of its interaction with another object.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a net external force.

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) is calculated using the formula: a = (final velocity - initial velocity) / time.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is air resistance?

Back

Air resistance is a type of friction that acts against the motion of an object moving through the air.

Front

What happens to the acceleration of an object in free fall when air resistance is present?

Back

The acceleration is less than 9.8 m/s² due to the opposing force of air resistance.

Front

What is the role of friction in motion?

Back

Friction opposes the motion of an object, acting in the opposite direction to the applied force.

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium prevents further acceleration.

Front

What is the upward force acting on a parachute called?

Back

The upward force acting on a parachute is called air resistance.

Front

How does an upward acceleration affect a skydiver's velocity?

Back

When a skydiver experiences an upward acceleration, they are slowing down, meaning their velocity is downward.