Free Fall

Front

What is free fall?

Back

Free fall is the motion of an object under the influence of gravitational force only, without any air resistance.

Front

What is the acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately 9.81 m/s².

Front

What happens to the velocity of an object in free fall?

Back

The velocity of an object in free fall increases by approximately 9.81 m/s every second.

Front

At what point in its trajectory is the velocity of a thrown object zero?

Back

The velocity of a thrown object is zero at the highest point of its trajectory.

Front

What is the relationship between height and time in free fall?

Back

The height from which an object is dropped can be calculated using the formula: height = 0.5 * g * t², where g is the acceleration due to gravity and t is the time in seconds.

Front

Does an object in space experience free fall?

Back

Yes, an object in space experiences free fall if there is no air resistance.

Front

What is the final velocity of an object dropped from a height of 125 m (ignoring air resistance)?

Back

The final velocity can be calculated using the formula: v = √(2 * g * h), which results in approximately 50 m/s for a height of 125 m.

Front

What is the effect of air resistance on free fall?

Back

Air resistance opposes the motion of falling objects, reducing their acceleration and final velocity compared to free fall in a vacuum.

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed reached by an object when the force of air resistance equals the force of gravity, resulting in no further acceleration.

Front

How does mass affect free fall?

Back

In free fall, all objects accelerate at the same rate regardless of their mass, assuming no air resistance.