Aprobe is launched from earth and lands on mars the gravitational acceleration on mars is 3.7 m/s. which statement best compares the mass and weight of the probe

There are no correct statements among the choices you gave us.

When the probe arrives on the surface of Mars, its mass is the same
as it was on Earth, and at every place along the way.

But its weight is   (3.7/9.8) = 37.8% of what it weighed on Earth.

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.