Mass Vs. Weight, Air Resistance, Gravity and Free Fall Quiz

1. True or False: Mass is the gravitational force/pull on an object.

• True
• False

2. True or False: Every object exerts a gravitational force on every other object in the universe.

• True
• False

3. True or False: A person will weigh more on the moon than on Earth.

• True
• False

4. True or False: Gravitational force weakens as the distance between two objects increases.

• True
• False

5. True or False: All objects in free-fall fall to Earth at the same acceleration.

• True
• False

6. A farmer brings his prize pumpkin to the fair. If the mass of the pumpkin is 140 kg, what is its weight?

• 14 N
• 1.4 N
• 140 N
• 1400 N

7. If an object on Mars weighs 45 N and the acceleration due to gravity on Mars is 3.8 m/s/s, what is the mass of the object?

• 11.84 kg
• 171 kg
• 45 kg
• 3.8 kg

8. Which statement is correct?

• Weight is the amount of material in an object.
• Mass can change based on location.
• Weight is the gravitational pull on an object.
• Mass is the gravitational pull on an object.

9. Your weight on Mars is only about 1/3 your weight on Earth. Which reason BEST explains this?

• Mars is more massive than Earth
• Mars has a smaller force of gravity than Earth
• Mars has a greater force of gravity than Earth
• An object on Mars has less mass than the same object on Earth

10. The moon has 1/6 the gravity of Earth, which is approximately 10 m/s/s. If something has a mass of 120 kg, what will be its approximate weight on the moon?

• 12 N
• 1200 N
• 200 N
• 720 N