An astronaut takes a 6.5 kg bowling ball to the moon, which has a gravitational acceleration of 1.6 m/s 2 . What is the weight of the ball while it is on the moon? A. 4.06 N B. 4.9 N C. 8.1 N D. 10.4 N

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?