Forces Affecting Falling Objects

1. What force primarily causes an object to fall toward the ground?

• A) Air resistance

• B) Gravity

• C) Magnetism

• D) Friction

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2. Which of the following would increase the time it takes for an object to fall?

• A) Increasing the mass of the object

• B) Removing all air resistance

• C) Attaching a parachute to the object

• D) Dropping the object from a lower height

3. When designing a parachute to slow a falling object, which factor is most important?

• A) The weight of the object

• B) The shape and size of the parachute

• C) The color of the parachute

• D) The type of string used to attach the parachute

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4. Air resistance, or drag, is best described as:

• A) A force that pulls objects toward Earth

• B) A force that pushes an object forward

• C) A force that opposes an object's motion through the air

• D) A force that increases an object's speed when falling

5. You are testing different parachute designs to slow a falling object. What is the independent variable in this experiment?

• A) The size of the parachute

• B) The time it takes for the object to reach the ground

• C) The height from which the object is dropped

• D) The mass of the falling object

Tags

NGSS.MS-PS2-2

6. Why does increasing the surface area of a parachute slow down the falling object?

• A) It increases the force of gravity pulling the object down.

• B) It increases air resistance, opposing the downward motion.

• C) It reduces the weight of the object.

• D) It makes the object fall in a straight line.

7. A student drops two identical objects, one with a parachute and one without. The object with the parachute falls slower. What scientific principle explains this?

• A) Gravity increases with mass

• B) Air resistance slows down falling objects

• C) Objects with parachutes weigh less

• D) All objects fall at the same speed regardless of air resistance

8. What would happen if there were no air resistance when an object falls?

• A) The object would fall slower.

• B) The object would fall at the same speed as it would with air resistance.

• C) The object would fall faster.

• D) The object would stop falling.

9. A group of students tests different materials for a parachute. What would be the dependent variable in their experiment?

• A) The type of material used for the parachute

• B) The number of parachutes tested

• C) The time it takes for the object to reach the ground

• D) The weight of the object

Tags

NGSS.MS-PS2-2

10. Which of the following would NOT affect the speed at which an object falls?

• A) The surface area of the object

• B) The shape of the object

• C) The color of the object

• D) The presence of air resistance