How fast does it move after the bullet emerges
A 13 g bullet traveling 224 m/s penetrates a 2 kg block of wood and emerges going 166 m/s. If the blosk is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
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When a 100 gram mass is suspended from a vertical spring and it remains motionless, what is the net force on the mass in this equilibrium position?
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