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A toy car moving in the -x direction experiences an acceleration of +1.5 m/s2. What does this mean? A) The car moves 1.5 meters every second. B) The car moved 1.5 meters in the first second it travelled. C) The car is speeding up by 1.5 m/s every second. D) The car is slowing down by 1.5 m/s every second.

A toy car moving in the -x direction experiences an acceleration of +1.5 m/s2. What does this mean? A) The car moves 1.5 meters every second. B) The car moved 1.5 meters in the first second it travelled. C) The car is speeding up by 1.5 m/s every second. D) The car is slowing down by 1.5 m/s every second.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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**Understanding Acceleration: Educational Exercise** A toy car moving in the -x direction experiences an acceleration of +1.5 m/s². What does this mean? A) The car moves 1.5 meters every second. B) The car moved 1.5 meters in the first second it travelled. C) The car is speeding up by 1.5 m/s every second. D) The car is slowing down by 1.5 m/s every second. ### Explanation: When an object experiences acceleration, its velocity changes over time. Acceleration can cause an object to either speed up or slow down depending on the direction of the acceleration and the direction of the object’s motion. In this context, the toy car is moving in the negative x direction (-x direction). - If the given acceleration is +1.5 m/s², and it is mentioned that the car is moving in the -x direction, this signifies that the positive acceleration is opposite to the direction of motion. ### Keywords: - **Acceleration**: The rate of change of velocity of an object - **Velocity**: The speed of something in a given direction --- For further understanding, consider reviewing the principles of kinematics and vector quantities in motion. ### Detailed Explanation: The correct answer is **D) The car is slowing down by 1.5 m/s every second** because the positive acceleration (1.5 m/s²) is acting against the direction of motion (-x direction), leading to a decrease in the car's velocity.
Transcribed Image Text:**Understanding Acceleration: Educational Exercise** A toy car moving in the -x direction experiences an acceleration of +1.5 m/s². What does this mean? A) The car moves 1.5 meters every second. B) The car moved 1.5 meters in the first second it travelled. C) The car is speeding up by 1.5 m/s every second. D) The car is slowing down by 1.5 m/s every second. ### Explanation: When an object experiences acceleration, its velocity changes over time. Acceleration can cause an object to either speed up or slow down depending on the direction of the acceleration and the direction of the object’s motion. In this context, the toy car is moving in the negative x direction (-x direction). - If the given acceleration is +1.5 m/s², and it is mentioned that the car is moving in the -x direction, this signifies that the positive acceleration is opposite to the direction of motion. ### Keywords: - **Acceleration**: The rate of change of velocity of an object - **Velocity**: The speed of something in a given direction --- For further understanding, consider reviewing the principles of kinematics and vector quantities in motion. ### Detailed Explanation: The correct answer is **D) The car is slowing down by 1.5 m/s every second** because the positive acceleration (1.5 m/s²) is acting against the direction of motion (-x direction), leading to a decrease in the car's velocity.
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