Gravity and Inertia

Front

What would happen to Earth if there were no inertia?

Back

Earth would crash into the sun.

Front

What does inertia tell us about moving or stopping an object?

Back

Inertia tells us that we need a force to get an object moving or to make it stop.

Front

What is gravity based on?

Back

Gravity is based on an object's mass.

Front

How is weight defined?

Back

Weight is how strongly your body is being pulled down by gravity.

Front

What does anything with mass have?

Back

Anything with mass also has a 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 mass affect gravitational force?

Back

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

Front

What is the relationship between gravity and distance?

Back

The force of gravity decreases as the distance between two objects increases.

Front

What is the formula for calculating weight?

Back

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

Front

What role does inertia play in space travel?

Back

Inertia allows spacecraft to continue moving in a straight line unless acted upon by a force.