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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Textbook Question
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Chapter 5, Problem 8TS

A 1 kg ostrich egg is thrown at 2 m / s at a bedsheet and is brought to rest in 0.2 s . Show that the average amount of force on the egg is 10 N .

Expert Solution & Answer
Check Mark
To determine

The average amount of force on the egg.

Answer to Problem 8TS

The average amount of force on the egg is 10N.

Explanation of Solution

Given Info: The mass of the ostrich egg is 1kg, throwing speed of the ostrich egg is 2m/s, time to ostrich egg come at rest is 0.2s.

Write the expression to calculate the momentum of the ostrich egg.

P=mv

Here,

P is the momentum of the ostrich egg

m is the mass of the ostrich egg

v is the throwing speed of the ostrich egg

Write the expression to calculate the impulse on the ostrich egg.

I=Ft

Here,

I is the impulse on the ostrich egg

F is the average amount of force on the ostrich egg

t is the time to ostrich egg come at rest

The momentum of the ostrich egg is same as the impulse on the ostrich egg, so equate the above two expressions to calculate the average amount of force on the ostrich egg.

I=PFt=mvF=mvt

Substitute 1kg for m, 2m/s for v and 0.2s for t to find F.

F=(1kg)(2m/s)0.2s=10kgm/s2=(10kgm/s2)(1N1kgm/s2)=10N

Conclusion:

Therefore, the average amount of force on the egg is 10N.

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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