Newton's Second Law Flashcard

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

How do you calculate mass using Newton's Second Law?

Back

Mass can be calculated using the formula: m = F/a, where F is the force applied and a is the acceleration.

Front

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

Back

The unit of force is the Newton (N). One Newton is defined as the force required to accelerate a one-kilogram mass by one meter per second squared.

Front

What is the relationship between force, mass, and acceleration?

Back

The relationship is described by Newton's Second Law: Force equals mass times acceleration (F = ma). This means that for a constant mass, an increase in force results in an increase in acceleration.

Front

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

Back

If the mass increases while the force remains constant, the acceleration will decrease, as acceleration is inversely proportional to mass (a = F/m).

Front

What is inertia?

Back

Inertia is the property of an object to resist changes in its state of motion. The greater the mass of an object, the greater its inertia.

Front

What is the unit for acceleration?

Back

The unit for acceleration is meters per second squared (m/s²).

Front

What is the unit for mass?

Back

The unit for mass is kilograms (kg).

Front

If a truck with a mass of 2000 kg accelerates at 2 m/s², what is the force applied?

Back

Using F = ma, the force is F = 2000 kg * 2 m/s² = 4000 N.

Front

What is the effect of applying brakes on vehicles with different masses?

Back

The vehicle with the smaller mass will require less force to stop than the vehicle with the larger mass, assuming both vehicles are traveling at the same speed.