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An astronaut with a mass of #100 kg# is floating in space. If the astronaut throws an object with a mass of #2 kg# at a speed of #11/9 m/s#, how much will his speed change by?

Answer 1

#Delta v=-0,0249 m/s#

#P_b=0; " total momentums before event"# #P_a,P_o:" astronaut and object's momentums after event"# #0=P_a+P_o# #0=98*v_a+2*11/9# #22/9=-98*v_a# #v_a=-22/(9*98)# #v_a=-0,0249 m/s# #Delta v=-0,0249-0# #Delta v=-0,0249 m/s#

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Answer 2

Benjamin Asiedu

The astronaut's speed will change by ( \frac{2}{27} ) m/s in the opposite direction.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.