Gravity on other worlds

Answer Key - Grade 11 Science Worksheet

Circle the best answer, or write your answer on the line.

1. 1.

   A box weighs 74 N on Mercury, where NASA lists g as 3.7 m/s². What is its mass, Ari?

   20 kg
2. 2.

   A box weighs 69.3 N on Jupiter, where NASA lists g as 23.1 m/s². What is its mass, Esme?

   3 kg

3. Read this first

   A 10 kg rover on six worlds (NASA g values)

   World	g (m/s²)	Weight (N)
   Mercury	3.7	37
   Venus	8.9	89
   Earth	9.8	98
   Moon	1.6	16
   Mars	3.7	?
   Jupiter	23.1	?

4. 3.

   Using the table, what does the rover weigh on Mars, Jun?

   • 37 N
   • 3.7 N
   • 10 N, its mass
5. 4.

   Using the table, what does the rover weigh on Jupiter, Kira?

   • 231 N
   • 23.1 N
   • 2.31 N
6. 5.

   A ball is dropped 2 m on the Moon (g = 1.6 m/s²) and on Earth (g = 9.8 m/s²). Where does it take longer to land, Milo?

   • On the Moon
   • On Earth
   • It takes the same time
7. 6.

   On the Moon, where g = 1.6 m/s², how long does a ball take to fall 2 m from rest, Noah?

   • About 2.5 s
   • About 1.58 s
   • About 0.8 s
8. 7.

   On Jupiter, where g = 23.1 m/s², a ball dropped from rest falls for 0.5 s. How fast is it moving then, Pia?

   • About 46.2 m/s
   • About 5.8 m/s
   • About 11.6 m/s
9. 8.

   A 2 kg box hangs from a spring scale on Mars, where g = 3.7 m/s². What does the scale read, Ren?

   • 2 N
   • 19.6 N, as on Earth
   • 7.4 N
10. 9.

    On Earth, a pan balance matches a box with 2 kg of standard masses. What does it show on the Moon, Tala?

    • It still balances with 2 kg
    • It needs about one-sixth as much
    • It can't balance
11. 10.

    Why does a spring scale read differently on the Moon while a pan balance doesn't, Zee?

    • The Moon changes the box's mass
    • The scale reads weight; the balance compares masses
    • Spring scales stop working in space