Question 25 astronauts orbiting the earth in the space shuttle experience a force of gravity that is several times greater than the fgrav experienced on earth's surface. several times smaller than the fgrav experienced on earth's surface. a fraction greater than the fgrav experienced on earth's surface. a fraction smaller than the fgrav experienced on earth's surface . nonsense! orbiting astronauts do not experience any gravitational pull from the earth.

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?