A 60 kg astronaut weighs 96 newtons on the surface of the Moon. The acceleration
due to gravity on the Moon is
0 0.0 m/s/s
O 9.8 m/s/s
O
4.9 m/s/s
O 1.6 m/s/s

Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable: