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 (Force = mass × acceleration).

Front

How do you calculate acceleration?

Back

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

Front

If a force of 20 N is applied to a mass of 5 kg, what is the acceleration?

Back

4 m/s².

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object over time.

Front

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

Back

The unit of force is the Newton (N).

Front

What is the relationship between mass and acceleration when a constant force is applied?

Back

As mass increases, acceleration decreases if the force remains constant, according to Newton's Second Law.

Front

What is the force required to accelerate a 10 kg object at 2 m/s²?

Back

20 N.

Front

What does a net force of zero indicate about an object's motion?

Back

A net force of zero indicates that the object is either at rest or moving at a constant velocity.

Front

What is the direction of the force acting on an object in circular motion?

Back

The direction of the force is toward the center of the circle.

Front

What is the formula for calculating weight?

Back

Weight can be calculated using the formula: W = mg, where 'W' is weight, 'm' is mass, and 'g' is the acceleration due to gravity (approximately 9.81 m/s²).