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 2, Problem 7RQ

How can you both at rest and also moving at 100 , 000 km/h at same time?

Expert Solution & Answer
Check Mark
To determine

To-determine: The reason that a person can be both at rest and also moving at 100,000km/h at the same time.

Answer to Problem 7RQ

The reason that a person can be both at rest and also moving at 100,000km/h at the same time because a person can be at rest with respect to Earth is moving at same velocity.

Explanation of Solution

Relative speed is defined as the speed of an object concerning the other moving or fixed object. If two objects were moving in the same direction and with the same velocity, then its relative speed is zero. Similarly, if two objects move with the same magnitude of velocity but have opposite directions, then the relative velocity of both objects, respect to each other is equal to double of the actual speed.

If a person is not moving or is at rest on the Earth which is revolving with speed of 100,000km/h. Then the relative speed of the person and Earth concerning each other is equal to zero in magnitude. But the speed with respect to outer space is the Earth's revolving speed. Thus, in this way a person can be both at rest and also moving at 100,000km/h at the same time.

Conclusion:

Therefore, the reason that a person can be both at rest and also moving at 100,000km/h at the same time because a person can be at rest with respect to Earth is moving at same velocity.

Chapter 2 Solutions

Conceptual Physical Science Explorations

Ch. 2 - When only a pair of equal and opposite forces act...Ch. 2 - We’ve learned that velocity is a vector quantity....Ch. 2 - Name the force that occurs in a rope when both...Ch. 2 - How much tension is there in a rope that holds a...Ch. 2 - What is the meaning of F=0?Ch. 2 - Why is the support force on an object often called...Ch. 2 - When you weigh yourself, are you actually reading...Ch. 2 - Give an example of something moving when a net...Ch. 2 - If we push a crate at constant velocity, how do we...Ch. 2 - If you’re in a smooth-riding bus that is going at...Ch. 2 - Calculate Emily’s average walking speed when she...Ch. 2 - Calculate your average speed if you run 100 meters...Ch. 2 - Calculate the average speed of a mouse who runs...Ch. 2 - Calculate the speed of a bowling ball that moves 8...Ch. 2 - Jogging Johnny runs along a train flatcar that...Ch. 2 - A track is made of a piece of channel metal bent...Ch. 2 - A block of iron is suspended by ropes in the...Ch. 2 - Galileo found that a ball rolling down one incline...Ch. 2 - Correct your friend who says, "The race-car driver...Ch. 2 - If the speedometer of a car reads a constant speed...Ch. 2 - A hungry mosquito watches you resting in a hammock...Ch. 2 - If a huge bear were chasing you, its enormous mass...Ch. 2 - A space probe may be carried by a rocket into...Ch. 2 - Consider a ball at rest in the middle of a toy...Ch. 2 - Why do you lurch forward in a bus that suddenly...Ch. 2 - Push a shopping cart and it moves. When you stop...Ch. 2 - When your car moves along the highway at constant...Ch. 2 - Consider a pair of parallel forces, one having a...Ch. 2 - The sketch shows a painting scaffold in mechanical...Ch. 2 - A different scaffold that weighs 300N supports two...Ch. 2 - Nellie Newton hangs at rest from the ends of the...Ch. 2 - Harry the painter swings year after year from his...Ch. 2 - Latisha stands on a bathroom scale and reads her...Ch. 2 - A child learns in school that Earth is travelling...Ch. 2 - If you toss a coin straight upward while riding in...Ch. 2 - As Earth rotates about its axis, it takes 3 hours...Ch. 2 - A tennis ball travels the full length of the...Ch. 2 - What is your average speed if you run 50m in 10s?...Ch. 2 - Find the net force produced by a 30-N and 20-N...Ch. 2 - A horizontal force of 100N is required to push a...Ch. 2 - Phil Physicer weighs 600N(132lb) and stands on two...Ch. 2 - Aristotle distinguished between natural motion and...Ch. 2 - The difference between speed and velocity most...Ch. 2 - The first scientist to discover the concept of...Ch. 2 - According to Newtons first law of motion (a)...Ch. 2 - A ball rolling along a bowling alley moves at...Ch. 2 - If your textbook is pulled to the right with while...Ch. 2 - The equilibrium rule, F=0 , applies to (a) objects...Ch. 2 - When you stand on two bathroom scales, one foot on...Ch. 2 - If you push your desk along the floor with a force...Ch. 2 - Suppose you stand on the floor of a train moving...
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