Author Question: Ann the Astronaut weighs 60 kg. She is space-walking outside the space shuttle and pushes a 270-kg ... (Read 154 times)

nelaaney · **on:** Jul 28, 2018

Ann the Astronaut weighs 60 kg. She is space-walking outside the space shuttle and pushes a 270-kg satellite away from the shuttle at 0.90 m/s. What speed does this give Ann as she moves toward the shuttle?
a. 4.0 m/s
c. 8.5 m/s
b. 5.3 m/s
d. 9.0 m/s

Question 2

When charging two objects by rubbing them together:
a. neither may be a conductor.
b. the heat produced by friction is a necessary part of this process.
c. they must be made of different material.
d. they will sometimes end up with both being positively charged.