HW 13 Due date: Thu Feb 22 11:59:00 pm 2018 (EST) 13-1 Bullet knocks Block off T

Question

HW 13 Due date: Thu Feb 22 11:59:00 pm 2018 (EST) 13-1 Bullet knocks Block off Table A bullet of mass m6.75 g is fired into a block of mass M = 2.54 kg that is initially at rest on the edge of a smooth table as shown in the drawing below. (The table top is 0.76 m above the floor.) The bullet ends up stuck in the block, and together they fly off the table and fall to the floor. If the bullet has an initial speed of 1170 m/s, what distance D will the block travel horizontally before landing on the floor? Tries 0/15 Printed from LON-CAPAOMSU Licensed under GNU General Public License aw use knemaics

Explanation / Answer

t = sqt(2h/g)

t = sqt(2*0.76/9.8)

t = 0.394 s

mu = (m + M)v

0.00675 x 1170 = (0.00675 + 2.56)v

v = (0.00675 x 1170) /  (0.00675 + 2.56)

v = 3.08 m/s

v = d/t

d = v*t

d = 3.08 m/s x 0.394 s

d = 1.2123 m

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