Dynamics C

Front

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

Back

The acceleration will decrease.

Front

What is the formula to calculate net force when an object is falling and encounters air resistance?

Back

Net Force = Weight - Air Resistance.

Front

If Mr. Freitas has a mass of 82 kg and the acceleration due to gravity is 9.8 m/s², what is his weight?

Back

Weight = mass × gravity = 82 kg × 9.8 m/s² = 803.6 N.

Front

What is the net force acting on Mr. Freitas if he encounters a resistance of 20.0 N while falling?

Back

Net Force = Weight - Air Resistance = 803.6 N - 20.0 N = 783.6 N.

Front

How do you calculate the acceleration of an object when the net force and mass are known?

Back

Acceleration = Net Force / Mass.

Front

If the net force on an object increases, what happens to its acceleration?

Back

The object's acceleration will increase.

Front

What is the effect of air resistance on the acceleration of a falling object?

Back

Air resistance decreases the net force, thus reducing the acceleration.

Front

Define 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.

Front

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

Back

Force = Mass × Acceleration.

Front

If an object has a net force of 780 N and a mass of 82 kg, what is its acceleration?

Back

Acceleration = Net Force / Mass = 780 N / 82 kg = 9.5 m/s².