APFIVE Impulse and Center of Mass Motion
A 60 kg ice skater initially at rest throws a 0.5 kg ball horizontally. After throwing, the skater moves backward at 0.4 m/s. If an external horizontal force of 2.0 N acts on the system for 0.1 seconds after the throw, what will be the final center-of-mass velocity?
A
0.2 m/s in the direction of the force
B
0 m/s
C
0.4 m/s in the direction opposite the force
D
0.0033 m/s in the direction of the force
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