Newton's Laws

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula F = ma, where F is the force, m is the mass, and a is the acceleration.

Front

What role does friction play in motion?

Back

Friction is a force that opposes the motion of an object. It acts in the opposite direction to the movement and can prevent an object from sliding or rolling indefinitely.

Front

What does a position-time graph for an object moving with constant velocity look like?

Back

A position-time graph for an object moving with constant velocity is a straight line with a constant slope. The slope of the line represents the object's velocity.

Front

What are the three laws of motion formulated by Isaac Newton?

Back

The three laws of motion are: 1) An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force (Newton's First Law). 2) The acceleration of an object is dependent on the net force acting upon it and its mass (Newton's Second Law). 3) For every action, there is an equal and opposite reaction (Newton's Third Law).

Front

How do you calculate the speed of an object?

Back

Speed is calculated by dividing the distance traveled by the time taken. The formula is: Speed = Distance / Time.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object; the greater the mass, the greater the inertia.

Front

What is the relationship between mass and acceleration in Newton's Second Law?

Back

In Newton's Second Law, mass and acceleration are inversely related. As the mass of an object increases, the acceleration decreases for a given force.

Front

What is the significance of the slope in a velocity-time graph?

Back

The slope of a velocity-time graph represents the acceleration of the object. A steeper slope indicates a greater acceleration.

Front

What is the difference between mass and weight?

Back

Mass is a measure of the amount of matter in an object, typically measured in kilograms. Weight is the force exerted by gravity on that mass, calculated as Weight = Mass x Gravity.

Front

What is the concept of action and reaction forces?

Back

According to Newton's Third Law, for every action force, there is an equal and opposite reaction force. This means that forces always occur in pairs.