A 2 kg block is at rest on a smooth, frictionless, horizontal table. The length of the
block is x.
A bullet of mass 0,015 kg, travelling east at 400 m∙s-1, strikes the block and passes straight through it with constant acceleration. Refer to the diagram below. Ignore any loss of mass of the bullet and the block.
4.1 State the principle of conservation of linear momentum in words. (2)
The block moves eastwards at 0,7 m∙s-1 after the bullet has emerged from it.
4.2 Calculate the magnitude of the velocity of the bullet immediately after it emerges from the block. (4)
4.3 If the bullet takes 0,002 s to travel through the block, calculate the length, x, of the block. (5)
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