Question

The truck in Figure P39.1 is moving at a speed of 10.0 m/s relative to the ground. The person on the truck throws a baseball in the backward direction at a speed of 20.0 m/s relative to the truck. What is the velocity of the baseball as measured by the observer on the ground?

Name: Problem 1, Chapter 39: Physics for Scientists and Engineers with Modern Physics
Uploaded: 2020-06-03T06:53:17-08:00
Duration: 2 min 34 s
Channel: Zulfiqar Ali
Description: The truck in Figure P39.1 is moving at a speed of 10.0 m/s relative to the ground. The person on the truck throws a baseball in the backward direction at a speed of 20.0 m/s relative to the truck. What is the velocity of the baseball as measured by the observer on the ground?

   The truck in Figure P39.1 is moving at a speed of 10.0 m/s relative to the ground. The person on the truck throws a baseball in the backward direction at a speed of 20.0 m/s relative to the truck. What is the velocity of the baseball as measured by the observer on the ground?

Physics for Scientists and Engineers with Modern Physics

Raymond A. Serway,… 8th Edition

Chapter 39, Problem 1

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Solved by Expert Zulfiqar Ali

06/03/2020

Step 1

Step 1: The velocity of the baseball as measured by the observer on the ground is the sum of the velocity of the baseball relative to the truck and the velocity of the truck relative to the ground. Show more…

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The truck in Figure P39.1 is moving at a speed of 10.0 m/s relative to the ground. The person on the truck throws a baseball in the backward direction at a speed of 20.0 m/s relative to the truck. What is the velocity of the baseball as measured by the observer on the ground?

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Key Concepts

Relative Velocity

Relative velocity is the concept of measuring the velocity of one object as observed from another moving object. It involves the addition or subtraction of velocities from different reference frames, allowing the determination of how fast an object is moving relative to another observer. This is especially useful for problems where objects are in motion within other moving systems.

Reference Frames

Reference frames are coordinate systems or perspectives from which observations and measurements (like position, velocity, and acceleration) are made. In problems involving moving objects, it's important to differentiate between an observer's frame (such as the ground) and the moving object's frame (such as a vehicle) to accurately determine relative motion using transformations.

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