Newton's Laws

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's Third Law of Motion?

Back

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

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N), which is equivalent to kg*m/s².

Front

How do you calculate force using mass and acceleration?

Back

Force (F) is calculated using the formula F = m * a, where m is mass and a is acceleration.

Front

What happens to the acceleration of an object if the mass increases while the force remains constant?

Back

The acceleration decreases because acceleration is inversely proportional to mass (a = F/m).

Front

What is inertia?

Back

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

Front

If a 2 kg object is subjected to a force of 10 N, what is its acceleration?

Back

Acceleration (a) is calculated as a = F/m = 10 N / 2 kg = 5 m/s².

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object, calculated as weight (W) = mass (m) * gravitational acceleration (g).

Front

What is gravitational acceleration on Earth?

Back

Gravitational acceleration on Earth is approximately 9.81 m/s².