Gravity & Inertia in the Solar System

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 inertia?

Back

Inertia is an object's tendency to continue moving at the same speed in the same direction unless acted upon by an external force.

Front

How does mass affect gravity?

Back

The more mass an object has, the stronger its gravitational pull.

Front

What keeps planets in orbit around the Sun?

Back

The balance between the gravitational pull of the Sun and the inertia of the planets.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass.

Front

What happens to an object in motion if no forces act on it?

Back

It will continue to move at the same speed and in the same direction due to inertia.

Front

Why does Mars have less gravity than Earth?

Back

Mars has less mass than Earth, resulting in a weaker gravitational pull.

Front

What is the formula for calculating weight?

Back

Weight = mass × gravity.

Front

What is the effect of distance on gravitational force?

Back

The gravitational force decreases as the distance between two objects increases.

Front

What is an example of inertia in everyday life?

Back

A passenger in a car continues to move forward when the car suddenly stops.