Two ice skaters push off against one another starting from a stationary position. The 45.0-kg skater acquires a speed of 0.375 m/s.
What speed does the 60.0-kg skater acquire? Assume that any other unbalanced forces during the collision are negligible.
A) 0.281 m/s B) 0.000 m/s C) 0.750 m/s D) 0.500 m/s E) 0.375 m/s
Question 2
Future space stations will create an artificial gravity by rotating. Consider a cylindrical space station of 380 m diameter rotating about its axis. Astronauts walk on the inside surface of the space station.
What rotation period will provide normal gravity? A) 28 s
B) 39 s
C) 6.2 s
D) 4.4 s
Ultrasound stethoscope in position on the pedal pulse
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