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An astronaut on a spacewalk becomes untethered and floats at rest 10. m from the space station. The astronaut and suit have a combined mass of 90. kg. She throws a 2.0-kg wrench directly away from the station at 9.0 m/s.
What is the astronaut’s velocity after throwing the wrench?
Challenge score: 0 / 6
C1. Place a check mark in three boxes to indicate the quantities that have the same magnitude for the wrench and the astronaut during the throw.
C2. How long does it take the astronaut to drift back to the station?
C3. The throw lasts 0.30 s. Substitute numerical values into a mathematical representation that can be used to determine the magnitude of the average force the astronaut exerts on the wrench. Then calculate the force.
C4. A student makes the following claim.
Place a check mark in either the Support or Refute box. Justify your response using a mathematical relationship.
C5. A compressed spring between two carts is released. The 1.0-kg cart moves left at 6.0 m/s. What is the velocity of the 3.0-kg cart?
C6. NASA spacewalkers wear a small jetpack that pushes out bursts of nitrogen gas to move them back to the station. Explain how expelling gas moves the astronaut, and identify one advantage of the jetpack over throwing tools.