Gravity and Motion

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 relationship between mass and gravity?

Back

The greater the mass of an object, the stronger its gravitational pull.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

How does weight change on the Moon compared to Earth?

Back

A person weighs less on the Moon because the Moon has less mass and therefore less gravity.

Front

What is a force?

Back

A force is a push or pull acting on an object.

Front

What is the formula for calculating weight?

Back

Weight = mass x gravitational acceleration (W = m x g).

Front

What is gravitational acceleration on Earth?

Back

Gravitational acceleration on Earth is approximately 9.81 m/s².

Front

What is the difference between mass and weight?

Back

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

Front

What does it mean for an object to be in free fall?

Back

An object is in free fall when it is falling under the influence of gravity only, with no other forces acting on it.

Front

What is the law of universal gravitation?

Back

The law states that every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.