Force and Motion

Front

What is Newton's Second Law of Motion?

Back

It states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Formula: F = ma.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the more inertia it has.

Front

What is the formula for calculating weight?

Back

Weight (W) is calculated using the formula W = mg, where m is mass and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth).

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object (measured in kg), while weight is the force exerted by gravity on that mass (measured in Newtons).

Front

What is a force?

Back

A force is a push or pull that is exerted on matter.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What happens when two forces of equal magnitude act in opposite directions?

Back

They cancel each other out, resulting in a net force of zero.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces are in contact.

Front

What is the role of a net force in motion?

Back

The net force determines the acceleration of an object. If the net force is zero, the object will not accelerate.

Front

What is gravitational force?

Back

Gravitational force is the attraction between two masses. It depends on the masses and the distance between them.