1) A 1000-kg truck moving on a horizontal surface has speed v=36 km/h when it strikes a horizontal coiled spring and is

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1) A 1000-kg truck moving on a horizontal surface has speed v=36 km/h when it strikes a horizontal coiled spring and is

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1) A 1000-kg truck moving on a horizontal surface hasspeed v=36 km/h when it strikes a horizontal coiledspring and is brought to rest in a distance of 2.0 m. What is thespring stiffness constant of the spring?
2) Two objects collide head on and stick together. Thefirst object has mass 1.0 kg and is moving with speed 1.0 m/s. Thesecond object has mass 2.0 kg and is moving with the speed 2.0 m/s.What is the speed of these objects after the collision?
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