Free Fall

Front

What is the acceleration due to gravity on Earth?

Back

9.81 m/s²

Front

What does a dot diagram represent in the context of free-falling objects?

Back

It visually represents the position of an object at equal time intervals, showing its acceleration due to gravity.

Front

If an object is dropped from rest, how does its velocity change over time?

Back

The velocity increases linearly due to constant acceleration from gravity.

Front

What is the formula to calculate the velocity of a free-falling object after a certain time?

Back

Velocity (v) = g * t, where g is the acceleration due to gravity and t is time.

Front

How long does it take for a ball thrown upward at 40 m/s to reach its highest point?

Back

Approximately 4 seconds.

Front

What is the velocity of a free-falling object after 3 seconds, assuming g is 10 m/s²?

Back

30 m/s.

Front

What is the significance of the highest point in the trajectory of a ball thrown upward?

Back

At the highest point, the velocity of the ball is 0 m/s before it starts to fall back down.

Front

How can you determine the position of a ball at different time intervals during its upward and downward motion?

Back

By using kinematic equations or a dot diagram to represent its position at equal time intervals.

Front

What is the relationship between time and velocity for an object in free fall?

Back

Velocity increases linearly with time due to constant acceleration.

Front

What is the approximate speed of a ball moving downward after 2 seconds if it was projected upward at 40 m/s?

Back

Approximately 30 m/s.