Understanding Free Fall

What is the primary difference between the physics definition of free fall and the skydiver's definition?

• Skydivers include parachute deployment.

• Skydivers consider air resistance.

• Physics considers only gravity.

• Physics includes wind speed.

Why is air resistance often neglected in basic free fall calculations?

• It is too complex to calculate.

• It has no effect on falling objects.

• It only affects very light objects.

• It simplifies the calculations.

What is instantaneous speed?

• The average speed over a period.

• The speed at a specific moment.

• The speed when an object stops.

• The speed after a long time.

How does the speed of a falling object change every second during free fall?

• It doubles every second.

• It increases by 10 m/s.

• It remains constant.

• It decreases by 10 m/s.

What does acceleration in free fall represent?

• Change in distance over time.

• Change in speed over time.

• Change in direction over time.

• Change in mass over time.

How is acceleration due to gravity commonly represented in equations?

• As 'v'.

• As 'a'.

• As 'g'.

• As 'm'.

What is the approximate value of 'g' used for calculations in free fall?

• 9.8 m/s²

• 10 m/s²

• 9.8 m/s

• 10 m/s

Does the size or weight of an object affect its acceleration in free fall?

• No, all objects fall at the same rate.

• Yes, larger objects fall faster.

• Yes, heavier objects fall slower.

• No, but only in a vacuum.

What is the formula for calculating instantaneous speed in free fall?

• Speed = Distance / Time

• Speed = Acceleration x Time

• Speed = Mass x Gravity

• Speed = Force / Mass

Why is 'g' sometimes approximated as 10 m/s² instead of 9.8 m/s²?

• Because it is more accurate.

• Because it is a universal constant.

• To simplify calculations.

• To account for air resistance.