Answer to Question #253270 in Physics for maryam

Question

the speed of a bullet can be estimated by firing it horizontally into a block of wood suspended from a long string so that the bullet becomes embedded in the centre of the block. the block swings so that the center of mass rises a vertical distance of 0.15 m. the mass of the bullet is 10g and that of the block is 1.99kg

i) assuming that air resistance can be neglected calculate the speed of the block and bullet immediately after the impact

ii) calculate the speed of the bullet before the impact

iii) if the tension in the string before the impact T give two reasons why the tension in the string immediately after the impact is greater than T

Answer 1

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