Unit 3/4 Kinematics Free Fall

Front

What is the formula to calculate the maximum height (h) reached by an object thrown vertically upward?

Back

h = (v^2) / (2g), where v is the initial velocity and g is the acceleration due to gravity (approximately 9.8 m/s²).

Front

What happens to the speed of an object at its maximum height when thrown vertically upward?

Back

The speed of the object is 0.0 m/s at its maximum height.

Front

What is the acceleration of an object in free fall near the surface of the Earth?

Back

The acceleration is approximately 9.8 m/s² downward.

Front

How do you calculate the distance fallen (d) by an object in free fall after a certain time (t)?

Back

d = 0.5gt², where g is the acceleration due to gravity.

Front

What is the relationship between speed (v), acceleration (a), and time (t) for an object starting from rest?

Back

v = at, where v is the final speed, a is the acceleration, and t is the time.

Front

If a ball is dropped from rest and reaches a speed of 20 m/s, how long has it been falling?

Back

Approximately 2 seconds, using the formula t = v/g.

Front

What is the significance of neglecting friction in free fall problems?

Back

Neglecting friction simplifies calculations by assuming that only gravity acts on the object.

Front

How do you determine the time taken for an object to reach a certain height with constant acceleration?

Back

Use the formula: t = sqrt(2h/g), where h is the height and g is the acceleration due to gravity.

Front

What is the initial velocity of a rocket that lifts off from rest?

Back

The initial velocity is 0 m/s.

Front

What is the formula for calculating the final velocity (v) of an object in free fall after falling a distance (d)?

Back

v = sqrt(2gd), where g is the acceleration due to gravity.