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Chapter 3: Problem 5

Define the acceleration of an object moving in a straight line.

Short Answer

Expert verified
Answer: The acceleration of an object moving in a straight line is the rate at which the object's velocity changes over time, along a single dimension, taking into account both the magnitude and direction of these changes. It is mathematically represented as: a = \frac{\Delta v}{\Delta t} where a is the acceleration, 螖v is the change in velocity, and 螖t is the change in time.

Step by step solution

01

Understand the concept of acceleration

Acceleration is a measure of how quickly an object's velocity changes over a period of time. It is a vector quantity, which means it has both a magnitude (how much the velocity changes) and a direction (whether the object is speeding up or slowing down).
02

Define velocity

Velocity is the rate at which an object changes its position. It is also a vector quantity, with magnitude (speed) and direction. Mathematically, velocity (v) can be represented as the change in position (螖x) divided by the change in time (螖t), or: v = \frac{\Delta x}{\Delta t}
03

Define acceleration

Acceleration (a) is the rate at which an object's velocity changes over time. Like velocity, it is also a vector quantity. Mathematically, acceleration can be represented as the change in velocity (螖v) divided by the change in time (螖t), or: a = \frac{\Delta v}{\Delta t}
04

Illustrate an object moving in a straight line

When an object moves in a straight line, its motion is one-dimensional. This means its acceleration is also one-dimensional and only has one component, which can be either positive or negative. A positive acceleration means the object is speeding up, while a negative acceleration (also called deceleration) means it is slowing down.
05

Define the acceleration of an object moving in a straight line

Based on the understanding of the acceleration and one-dimensional motion of an object, we can define the acceleration of an object moving in a straight line as: The rate at which the object's velocity changes over time, along a single dimension, taking into account both the magnitude and direction of these changes. Mathematically, it is represented as: a = \frac{\Delta v}{\Delta t} where a is the acceleration, 螖v is the change in velocity, and 螖t is the change in time.

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