Halliday, Fundamentals of Physics, 10e Help I S BACK NEXT ENT ES Chapter 09, Pro
ID: 2036071 • Letter: H
Question
Halliday, Fundamentals of Physics, 10e Help I S BACK NEXT ENT ES Chapter 09, Problem 100 In a game of pool, the cue ball strikes another ball of the same mass and initially at rest. After cue ball and (b) the original speed of the cue ball e collision, the cue ball moves at 3.10 m/s along a line making an angle of 13.0° with its of 2.70 m/s. Find (a) the angle between the direction of motion of the second ball and the original direction of motion of the (a) Number (b) Number Click if you Units Units The number orsonficant digits is set to S? the tolerance is +/-4% ISN nter 09. Problem Question Attempts: Unlimited SAVE FOR LATER SUBHIT ANSWEx pter 09, Problem nter 10 Problem 8 48 PM /4/2018 O Type here to searchExplanation / Answer
a) From conservation of momentum
m vi = m vf + m vfball
m vi = m vf cos 13 + m vfball cos theta
0 = vf sin 13 - vfball sin theta
vf sin 13 = vfball sin theta
sin theta = 3.1 * sin 13 / 2.70
theta = 15 deg
b) vi = vf cos 13 + vfball cos 15
= 3.1 * cos 13 + 2.7 * cos 15
original speed = 5.63 m/s
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