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Question 12

Two objects are dropped from a height of 10 m, one here on earth and one on the moon. The object on the moon is 6 times as massive as the one on earth.

The constant g on the moon is 6 times smaller than on the earth.

Which of the following statements is correct:

a) The falling time on earth is shorter

b)The falling time on earth is longer

c) The falling times are equal

Average: = 0,38

Please explain your answer briefly.

Answer: Mass has no influence. a = g. Since g(earth) > g(moon) -> a(earth) > a(moon)

Average: =0,23

Comment:

The item is meant to test again the stability of the knowledge about falling objects. In addition some transfer is needed.

In comparison with other related items this low score proves again, that knowledge about falling objects is poorly developed.