Mass, Weight and Gravity

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, measured in kilograms (kg), while weight is the force exerted by gravity on that mass, measured in newtons (N).

Front

What is the formula for calculating weight?

Back

Weight (W) = Mass (m) × Gravitational acceleration (g). In Earth’s gravity, g is approximately 9.81 m/s².

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, depending on their masses and the distance between them.

Front

What is the SI unit of mass?

Back

The SI unit of mass is the kilogram (kg).

Front

What is the SI unit of weight?

Back

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

Front

How does gravity affect objects in a vacuum?

Back

In a vacuum, all objects fall at the same rate regardless of their mass, meaning they will hit the ground at the same time.

Front

What is the relationship between mass and gravitational attraction?

Back

The greater the mass of an object, the greater its gravitational attraction. This means more massive objects exert a stronger pull on other objects.

Front

What is the gravitational force between two objects dependent on?

Back

The gravitational force between two objects depends on their masses and the distance between them.

Front

What happens to weight as you move away from the Earth's surface?

Back

As you move away from the Earth's surface, your weight decreases because the gravitational force acting on you decreases.

Front

What is an example of a tool used to measure mass?

Back

A balance scale is commonly used to measure mass.