Free Fall Flashcard

Front

What is free fall?

Back

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

Front

What happens to the speed of an object thrown upwards when it comes back down in the absence of air resistance?

Back

The speed of the object when caught is the same as the speed it had when thrown upwards.

Front

How does the velocity of a baseball change as it rises in the air?

Back

The velocity decreases as the baseball rises due to the force of gravity acting against it.

Front

What is the formula to calculate acceleration?

Back

Acceleration (a) = (final velocity (v) - initial velocity (u)) / time (t).

Front

If a box slides down an inclined plane and attains a velocity of 27 m/s in 3 seconds from rest, what is its acceleration?

Back

The acceleration is 9 m/s².

Front

What does a graph showing a straight line at a constant height represent?

Back

The graph represents constant speed.

Front

What is the effect of gravity on a freely falling object?

Back

Gravity causes the object to accelerate downwards at approximately 9.81 m/s².

Front

Define terminal velocity.

Back

Terminal velocity is the constant speed an object reaches when the force of gravity is balanced by the drag force acting against it.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is the significance of air resistance in free fall?

Back

Air resistance opposes the motion of falling objects, affecting their acceleration and terminal velocity.