Flashcard: Newton's Laws & Gravity 2024

Front

What is Newton's 1st Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is Newton's 2nd Law of Motion?

Back

The acceleration of an object depends on the mass of the object and the amount of force applied. It can be expressed with the formula F=ma (Force = mass x acceleration).

Front

What is Newton's 3rd Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is inertia?

Back

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

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object and does not change regardless of location. Weight is the force of gravity acting on that mass and can change depending on the gravitational pull.

Front

How does gravity affect weight?

Back

Weight changes as the pull of gravity changes; for example, an object weighs less on the Moon than on Earth due to the Moon's weaker gravitational pull.

Front

What happens to your body when a train stops suddenly?

Back

Due to inertia, your body keeps going in the same direction even though the train stops.

Front

What is the acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately 9.8 m/s².

Front

If you drop an object, how fast will it fall after 5 seconds?

Back

After 5 seconds, an object will fall at a speed of approximately 49.0 m/s.

Front

What is the formula to calculate force?

Back

The formula to calculate force is F = ma (Force = mass x acceleration).