(a) What recoil velocity does she acquire in response to a single shot from a stationary position, assuming that no external force keeps her in place?
Enter a number.
1
m/s
(b) Under the same assumption, what would be her recoil velocity if, instead, she shoots a blank cartridge that ejects a mass of 5.0
10
-4 kg at a velocity of
+728 m/s?
Enter a number.
2
m/s