Chapter 5 - Newton's Second Law - Review!

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 net force, m is the mass, and a is the acceleration.

Front

How does doubling the net force affect acceleration?

Back

If the net force acting on an object is doubled, the acceleration also doubles, assuming the mass remains constant.

Front

What two quantities contribute to acceleration according to Newton?

Back

Mass and Force.

Front

What is the acceleration of an object moving at constant velocity?

Back

The acceleration of an object moving at constant velocity is 0 m/s², as there is no change in speed or direction.

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium (like air) prevents further acceleration.

Front

What is the acceleration of a skydiver who has reached terminal velocity?

Back

0 m/s², as the forces of gravity and air resistance are balanced.

Front

How do you calculate acceleration?

Back

Acceleration can be calculated using the formula: a = F/m, where a is acceleration, F is net force, and m is mass.

Front

If a boy is riding a 5 kg bike with a constant force of 15 N, what is his acceleration?

Back

3 m/s², calculated using the formula a = F/m (15 N / 5 kg = 3 m/s²).

Front

What happens to acceleration if mass is increased while keeping the net force constant?

Back

If mass is increased while keeping the net force constant, the acceleration decreases.

Front

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

Back

The relationship is inversely proportional; as mass increases, acceleration decreases for a constant net force.