Conceptual Physical Science Explorations
Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Question
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Chapter 5, Problem 7TS
To determine

The speed of the smaller fish before lunch.

Expert Solution & Answer
Check Mark

Answer to Problem 7TS

The speed of the smaller fish is 5m/s before lunch.

Explanation of Solution

Given Info: The mass of the larger fish is 5kg , mass of the smaller fish is 1kg and speed of the larger fish before lunch is 1m/s.

No external force is acting on both the fishes, so the momentum of both fishes will remains conserved.

Write the expression to calculate the speed of smaller fish before lunch.

Mv=muu=Mvm

Here,

M is the mass of the larger fish

m is the mass of the smaller fish

v is the speed of the larger fish

u is the speed of the smaller fish before lunch

Substitute 5kg for M, 1kg for m and 1m/s for v in the above expression to find u.

u=(5kg)(1m/s)1kg=5m/s

Conclusion:

Therefore, the speed of the smaller fish is 5m/s before lunch.

Chapter 5 Solutions

Conceptual Physical Science Explorations

Ch. 5 - Which is the greater change in momentum, stopping...Ch. 5 - Which requires the greater impulse, stopping...Ch. 5 - When can the momentum of two moving objects be...Ch. 5 - What does it mean to say that momentum (or any...Ch. 5 - When a cannonball is fired, its momentum does...Ch. 5 - When a cannonball is fired, the cannon recoils. Is...Ch. 5 - When a cannonball is fired, is momentum conserved...Ch. 5 - Distinguish between an elastic collision and an...Ch. 5 - Railroad car A rolls at a certain speed and makes...Ch. 5 - If the equally massive cars of the previous...Ch. 5 - Calculate the momentum of a 10kg bowling ball...Ch. 5 - Calculate the momentum of a 50-kg carton that...Ch. 5 - Calculate the impulse that occurs when an average...Ch. 5 - Calculate the impulse that occurs when the same...Ch. 5 - The balls have different masses and speeds. (a)...Ch. 5 - Evan pushes crate starting at rest across a floor...Ch. 5 - When rollerblading, why is a fall less harmful on...Ch. 5 - In terms of impulse and momentum, why do air bags...Ch. 5 - Prob. 3TECh. 5 - In terms of impulse and momentum, why are nylon...Ch. 5 - If you throw an egg against a wall, the egg will...Ch. 5 - A lunar vehicle is tested on Earth at a speed of...Ch. 5 - Which has the greater momentum when they move at...Ch. 5 - In answering the preceding exercise, perhaps you...Ch. 5 - Why do 6-ounce boxing gloves hit harder than...Ch. 5 - Which undergoes the greatest change in momentum:...Ch. 5 - In the preceding question, in which case is the...Ch. 5 - If a fully loaded shopping cart and an empty one...Ch. 5 - A fully dressed person is at rest in the middle of...Ch. 5 - Michael throws a ball horizontally while standing...Ch. 5 - Two football players have a head-on collision and...Ch. 5 - In the previous chapter, rocket propulsion was...Ch. 5 - When you are travelling in a car at highway speed,...Ch. 5 - If an 18-wheeler tractor-trailer and a sports car...Ch. 5 - Your friend says that law of momentum conservation...Ch. 5 - How much impulse is needed to stop a 10kg bowling...Ch. 5 - A car with a mass of 1000kg moves at 20m/s. Show...Ch. 5 - A car carrying a 75kg test dummy crashes into a...Ch. 5 - Jane (mass 40.0kg), standing on the slippery ice,...Ch. 5 - A 2kg ball of putty moving to the right has a...Ch. 5 - A railroad diesel engine weighs four times as much...Ch. 5 - Prob. 7TSCh. 5 - A 1kg ostrich egg is thrown at 2m/s at a bedsheet...Ch. 5 - If fast Freddy doubles his running speed, what...Ch. 5 - A 1kg ball has the same speed as a 10kg ball....Ch. 5 - Two iron, balls, one twice the mass of other, are...Ch. 5 - If the mass of a cart full of groceries decreases...Ch. 5 - Your friend says that the impulse equals momentum....Ch. 5 - The impulse-momentum relationship is a direct...Ch. 5 - Which of the following equations best illustrates...Ch. 5 - When you jump from an elevated position to the...Ch. 5 - Standing on a stakeboard, you toss a ball...Ch. 5 - A big fish swims upon and swallows a small fish at...
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