Author Question: An astronaut of mass 70 kg weighs 700 N on Earth's surface. His weight on the surface of Mars, where ... (Read 80 times)

lb_gilbert · **on:** Jul 29, 2018

An astronaut of mass 70 kg weighs 700 N on Earth's surface. His weight on the surface of Mars, where the acceleration due to gravity is 3.7 m/s2, would be about

A) the same as on Earth.
B) 130 N.
C) 260 N.
D) 370 N.
E) none of the above

Question 2

When a rocket forces exhaust gases downward, the exhaust gases

A) as the name implies, soon exhaust their influence.
B) play no further role in the motion of the rocket.
C) exert an upward force on the rocket.