Gravity & Inertia Review

Front

What is gravity?

Back

Gravity is a force that attracts two bodies toward each other, such as the Earth pulling objects toward its center.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

Front

What happens to objects in a vacuum when dropped?

Back

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

Front

Why do planets orbit the sun?

Back

Planets orbit the sun because the sun has the most mass, creating a strong gravitational pull that keeps them in orbit.

Front

What would happen to Earth without gravity?

Back

Without gravity, Earth would not be able to hold onto its atmosphere and would fly out into space.

Front

What is the relationship between mass and gravity?

Back

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

Front

How does inertia affect motion?

Back

Inertia causes an object to continue moving in a straight line at a constant speed unless acted upon by an external force.

Front

What is the effect of gravity on falling objects?

Back

Gravity causes falling objects to accelerate towards the ground at a rate of approximately 9.8 m/s².

Front

What would happen to Earth if there were no inertia?

Back

If there were no inertia, Earth would not maintain its orbit and could crash into the sun.

Front

What is the formula for gravitational force?

Back

The formula for gravitational force is F = G * (m1 * m2) / r², where F is the force, G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers.