Explanation Given data: Mass of the bird ( m B ) is 300 g, which is written as 0.3 Kg. Mass of the insect ( m I ) is 10 g, which is written as 0.01 Kg. Initial speed (velocity) of the bird ( v B x ) i is 6 m s . Initial speed of the insect ( v I x ) i is ( − 30 m s ) , the negative sign is due to the direction of movement of the insect (the insect moves in opposite direction to the movement of the bird). Formula used: Write the expression for momentum of conservation for the system of two particles when they stick together after the collision. m 1 v 1 i + m 2 v 2 i = ( m 1 + m 2 ) v f (1) Here, m 1 is the mass of the first particle, m 2 is the mass of the second particle, v 1 i is the initial velocity of the first particle, v 2 i is the initial velocity of the second particle, and v f is the final velocity of the two particles (two particles stick together after the collision). Explanation: Consider the bird and the insect as a system. There are no external forces on the system when the bird swallows the insect. The bird and insect are stick together when the bird swallows the insect. Therefore, the horizontal momentum is conserved for the given system. Modify the expression in equation (1) for the given system as follows. m B ( v B x ) i + m I ( v I x ) i = ( m B + m I ) ( v BI x ) f (2) Here, ( v BI x ) f is the final velocity of the bird immediately after it swallows the insect. Rearrange the expression in equation (2) to find the final speed of the bird immediately after it swallows the insect as follows

College Physics: A Strategic Approach (3rd Edition)

3rd Edition

ISBN: 9780321879721

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Chapter 9, Problem 21P

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To find: The speed of the bird immediately after it swallows an insect.

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Chapter 9, Problem 20P

Chapter 9, Problem 22P

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College Physics: A Strategic Approach (3rd Edition)

Ch. 9 - Rank in order, from largest to smallest, the...Ch. 9 - Starting from rest, object 1 is subject to a 12 N...Ch. 9 - A 0.2 kg plastic cart and a 20 kg lead cart can...Ch. 9 - Two pucks, of mass m and 4m, lie on a frictionless...Ch. 9 - Prob. 5CQ Ch. 9 - Two students stand at rest, facing each other on...Ch. 9 - A 2 kg cart rolling to the right at 3 m/s runs...Ch. 9 - Automobiles are designed with crumple zones...Ch. 9 - You probably know that it feels better to catch a...Ch. 9 - In the early days of rocketry, some people claimed...

Ch. 9 - Two ice skaters, Megan and Jason, push off from...Ch. 9 - Suppose a rubber ball and a steel ball collide....Ch. 9 - While standing still on a basketball court, you...Ch. 9 - To win a prize at the county fair, youre trying to...Ch. 9 - Rank in order, from largest to smallest, the...Ch. 9 - Monica stands at the edge of a circular platform...Ch. 9 - If the earth warms significantly, the polar ice...Ch. 9 - The disks shown in Figure Qg.181 have equal mass....Ch. 9 - Curling is a sport played with 20 kg stones that...Ch. 9 - Two balls are hung from cords. The first ball, of...Ch. 9 - Figure Q9.21 shows two blocks sliding on a...Ch. 9 - Two friends are sitting in a stationary canoe. 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Chapter 9 Solutions