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Question1

A projectile that is fired up from a gun has an initial velocity of 94.0 km/h at an angle of 57.0° above the horizontal. While the projectile is at the top of its trajectory, an internal explosion causes it to separate into two fragments of equal mass. One of fragments falls straight downward although it had been released from rest. How far from the gun does the other fragment land?

Question2

A spring oriented perpendicularly is attached to a hard horizontal surface. The spring has a force constant of 1.67 kN/m. How much is the spring compacted when a object of mass m = 2.70 kg is placed on top of the spring and the system is at rest.

Question3

A 210, 38.0-cm-diameter turntable rotates on frictionless bearings at 69.0. A 22.0 block sits at the center of the turntable. A compressed spring shoots the block radically outward all along a frictionless groove in the surface of turntable.

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