Newton's 2nd law review

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that the force acting on an object is equal to the mass of that object multiplied by its acceleration (F = ma).

Front

What is the formula to calculate force?

Back

The formula to calculate force is F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the unit of force?

Back

The unit of force is the newton (N).

Front

If a 5 kg object accelerates at 4 m/s², what is the force applied?

Back

20 N (calculated using F = ma: F = 5 kg * 4 m/s²).

Front

What does acceleration measure?

Back

Acceleration measures the rate of change of velocity of an object.

Front

What is the relationship between mass and acceleration in Newton's 2nd Law?

Back

In Newton's 2nd Law, as mass increases, for a constant force, acceleration decreases.

Front

If a 10 kg object is at rest and a force of 30 N is applied, what will be its acceleration?

Back

3 m/s² (calculated using a = F/m: a = 30 N / 10 kg).

Front

What happens to the acceleration of an object if the force acting on it is doubled?

Back

If the force is doubled, the acceleration also doubles, assuming mass remains constant.

Front

What is inertia?

Back

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

Front

How does gravity affect the force required to accelerate an object upward?

Back

The force required to accelerate an object upward must overcome both gravity and provide the necessary acceleration.