Mass, Weight, and Gravity

Front

What is the definition of mass?

Back

Mass is the amount of matter in an object, typically measured in kilograms or grams.

Front

What is the definition of weight?

Back

Weight is the measure of the force exerted on an object due to the gravitational pull of the Earth or another celestial body.

Front

What is the relationship between mass and weight?

Back

Weight is directly proportional to mass; as mass increases, weight increases, assuming the gravitational field strength remains constant.

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other, proportional to their masses and inversely proportional to the square of the distance between their centers.

Front

How does gravity affect objects on Earth?

Back

Gravity pulls objects towards the center of the Earth, giving them weight.

Front

What happens to weight if the mass of an object increases?

Back

If the mass of an object increases, its weight also increases, assuming the gravitational field strength remains constant.

Front

What happens to weight if the gravitational field strength decreases?

Back

If the gravitational field strength decreases, the weight of an object decreases, even if its mass remains the same.

Front

Why do astronauts weigh less on the Moon than on Earth?

Back

Astronauts weigh less on the Moon because the Moon has less mass than Earth, resulting in a weaker gravitational pull.

Front

What is the formula for calculating weight?

Back

Weight (W) = Mass (m) × Gravitational acceleration (g).

Front

What is the gravitational acceleration on Earth?

Back

The gravitational acceleration on Earth is approximately 9.81 m/s².