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 with the same speed and in the same direction 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

Define inertia.

Back

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

Front

What is the formula for calculating kinetic friction?

Back

Frictional force (F_friction) = coefficient of kinetic friction (μ_k) × normal force (N).

Front

How do you calculate the net force acting on an object?

Back

Net force (F_net) = mass (m) × acceleration (a).

Front

What is the normal force?

Back

The normal force is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

Front

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

Back

The acceleration decreases, as acceleration is inversely proportional to mass (a = F_net/m).

Front

Explain why a passenger leans to the left when a car turns right.

Back

The passenger leans left due to inertia, which causes them to continue moving in a straight line while the car turns.

Front

What is the relationship between mass and weight?

Back

Weight (W) is the force of gravity acting on an object, calculated as W = mg, where m is mass and g is the acceleration due to gravity.