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Q. A 1-kg object is attached to spring and executes simple harmonic motion with a period of 2 s. what is accelarationof the object at t=0?

Q. A 5.0 g bullet leaves the muzzle of a rifle with a speed of 320 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.81 m long barrel of the rifle?

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