FreeFall

Front

What is free fall?

Back

Free fall is the motion of an object under the influence of gravitational force only, with no other forces acting on it, such as air resistance.

Front

What is the acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately -9.8 m/s².

Front

At what point does a free-falling object experience zero velocity?

Back

A free-falling object experiences zero velocity at the peak of its trajectory when it momentarily stops before falling back down.

Front

What happens to the speed of a free-falling object every second?

Back

The speed of a free-falling object increases by approximately 10 m/s every second.

Front

What is the initial velocity of an object in free fall dropped from rest?

Back

The initial velocity (v_i) of an object in free fall dropped from rest is 0 m/s.

Front

What is the effect of air resistance on free-falling objects?

Back

Air resistance opposes the motion of free-falling objects, reducing their acceleration and terminal velocity.

Front

How does the mass of an object affect its free fall?

Back

In a vacuum, all objects fall at the same rate regardless of mass; however, in the presence of air, heavier objects may fall faster due to less relative air resistance.

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

What is the formula for calculating the distance fallen in free fall?

Back

The formula is d = v_i * t + 0.5 * a * t², where d is distance, v_i is initial velocity, a is acceleration, and t is time.

Front

What is the significance of the negative sign in the acceleration due to gravity?

Back

The negative sign indicates that the acceleration is directed downward toward the center of the Earth.