Gravity Practice Flashcard

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.

Front

What is air resistance?

Back

Air resistance is a force that opposes the motion of an object through the air, often affecting the speed and acceleration of falling objects.

Front

What is the SI unit of force?

Back

The SI unit of force is the newton (N).

Front

How does air resistance affect falling objects?

Back

Air resistance slows down falling objects, and its effect increases with the object's speed and surface area.

Front

What happens when air resistance equals gravity?

Back

When air resistance equals gravity, the object falls at a constant speed, known as terminal velocity.

Front

Why do objects weigh more on Earth than on the Moon?

Back

Objects weigh more on Earth due to the stronger gravitational pull compared to the Moon.

Front

What factors affect air resistance?

Back

Air resistance is affected by speed, size, and shape of the object, but not by its mass.

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed an object reaches when the force of gravity is balanced by air resistance.

Front

How does the shape of an object influence air resistance?

Back

The shape of an object affects how air flows around it; streamlined shapes reduce air resistance, while flat shapes increase it.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass; weight increases with mass.