Motion#7-9 Free Fall

Front

What is free fall?

Back

Free fall is any motion of a body where gravity is the only force acting upon it.

Front

Do heavier objects free fall faster than lighter objects?

Back

False. In free fall, all objects accelerate at the same rate regardless of their mass.

Front

Does free fall take into consideration air resistance?

Back

False. Free fall assumes that only gravity acts on the object, neglecting air resistance.

Front

What is the acceleration due to gravity on Earth?

Back

Approximately 9.8 m/s².

Front

If an object is in free fall for 4 seconds, how fast will it be falling?

Back

After 4 seconds, the object will be falling at approximately 39.2 m/s (or 88 mph).

Front

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

Back

The velocity increases as the object falls.

Front

What is the formula to calculate the velocity of an object in free fall?

Back

Velocity (v) = g * t, where g is the acceleration due to gravity (9.8 m/s²) and t is the time in seconds.

Front

What is terminal velocity?

Back

Terminal velocity is the constant speed an object reaches when the force of air resistance equals the force of gravity.

Front

What factors affect the terminal velocity of an object?

Back

The mass and shape of the object, as well as the density of the fluid (air) it is moving through.

Front

What is the difference between free fall and projectile motion?

Back

Free fall is motion under the influence of gravity alone, while projectile motion involves an initial velocity and follows a curved path due to gravity.