Question

A) What is the weight of a 69 kg astronaut on Earth?

B) What is the weight of a 69 kg astronaut on the Moon?
(*g* = 1.7 m/s2).

C) What is the weight of a 69 kg astronaut on Mars? (*g*
= 3.7 m/s2).

D) What is the weight of a 69 kg astronaut in outer space traveling with constant velocity?

Answer #1

**We know that the weigh of the mass m is W =
mg**

**wher g is acceleration due to gravity**

**here mass of astronaut is m = 69 kg**

**A) m = 69 kg , W = m*g = 69*9.8 N = 676.20
N**

**B) on moon with g = 1.7 m/s2**

**W2 = 69*1.7 N = 117.3 N**

**C) the weight of a 69 kg astronaut on Mars with g = 3.7
m/s2**

**W3 = m*g = 69*3.7 N = 255.3 N**

**D) the weight of a 69 kg astronaut in outer space
traveling with constant velocity is **

**W4 = m*g = 69 *0 = 0 N**

**in space the acceleration due to gravity is
zero**

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