Compare skater's total energy at point A and at point E?(disregard the friction) E
a. There is no enough information
b. They are the same
c. A is greater than E
d. E is greater than A
a
b
b
С ООО
c
C
d
d

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?