Free Fall and Motion

Front

What is Free Fall?

Back

The motion of an object where the only force acting on it is gravity.

Front

What is the acceleration of an object in free fall (neglecting air resistance)?

Back

9.81 m/s² downward.

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 formula to calculate the distance fallen in free fall?

Back

d = 0.5 * g * t², where g is the acceleration due to gravity and t is the time in seconds.

Front

If an object is thrown upward, what happens to its velocity as it rises?

Back

Its velocity decreases until it reaches the peak height, where it becomes zero before falling back down.

Front

What is the significance of the term 'initial velocity' in motion problems?

Back

It refers to the velocity of an object at the start of the observation period.

Front

What is a scalar quantity?

Back

A quantity that is fully described by a magnitude alone, without direction.

Front

What is the formula for average velocity?

Back

Average velocity = Total displacement / Total time.

Front

What happens to the acceleration of an object thrown downward compared to an object dropped from rest?

Back

Both objects experience the same acceleration due to gravity, which is 9.81 m/s².

Front

What is the effect of air resistance on free fall?

Back

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