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A 0.540-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 11.2 cm.
(a) Calculate the maximum value of its speed.
cm/s
(b) Calculate the maximum value of its acceleration.
cm/s2
(c) Calculate the value of its speed when the object is 7.20 cm from the equilibrium position.
(d) Calculate the value of its acceleration when the object is 7.20 cm from the equilibrium position.
(e) Calculate the time interval required for the object to move from x = 0 to x = 3.20 cm.
s
A railroad car with a mass of 2 x10^4 kg moving at 3.0 m/s collides and joins with 2 railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.20 m/s.
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