A space person is motionless a distance of 500m away from the safety of the spacecraft. The person has exactly 11.32min of air left and the person's mass is 103.2kg, including equipment. The person throws a phaser at a velocity of 50.2km/h away from the space craft in order to get back. I f the mass of the phaser is 5.3 kg, how many minutes of extra air does the person have when they get back to the spacecraft？(Ans: 0.28min)
I attempted to solve it , but get the answer of 0.25min.
Conservation and momentum.
Impulse momentum theory
The Attempt at a Solution
I try to solve the question, but got the wrong answer. Could anyone help me out？ Thank you so much.