A car increases its speed from 8.4 meters per second to 11.7 meters per second in 4.3 seconds. What is the average acceleration of the car during this time interval?

Question

BlackTom AI · Accepted Answer

Consider the definition of average acceleration: it is the change in velocity divided by the time over which the change occurs.

Step 1: Identify the initial and final velocities. The car speeds up from 8.4 m/s (initial) to 11.7 m/s (final).

Step 2: Compute the change in velocity (final − initial). 11.7 − 8.4 = 3.3 m/s.

Step 3: Note the time interval over which this change happens. The time interval is 4.3 s.

Step 4: Divide the velocity change by the time interval to get average acceleration: a = Δv / Δt = 3.3 m/s ÷ 4.3 s.

Step 5: Perform the division. 3.3 / 4.3 ≈ 0.767... The result rounds to 0.77 when expressed with two significant figures.

Result interpretation: The car’s speed increases by 3.3 m/s over 4.3 s, which corresponds to an average acceleration of approximately 0.77 m/s^2. If you want more precision, you can keep more digits in the division before rounding.

A car increases its speed from 8.4 meters per second to 11.7 meters per second in 4.3 seconds. What is the average acceleration of the car during this time interval?

查看解析

登录即可查看完整答案

类似问题

Question at position 3 In Example 16 (p. 49), what is the cyclist's average acceleration for the entire trip (i.e., from 0 s to 1800 s)? -2 ms2\frac{m}{s^2}-1 ms2\frac{m}{s^2}-0.0006 ms2\frac{m}{s^2}0 ms2\frac{m}{s^2}0.0006 ms2\frac{m}{s^2}1 ms2\frac{m}{s^2}2 ms2\frac{m}{s^2}Clear my selection

Referring to Figure 1.10 in Chapter 1 of the text (reproduced below), compare the magnitudes of the average accelerations for Hare and the Tortoise.

Calculate average acceleration from 0 to 40 m. NOTE: SI unit symbol must be provided and round to three (3) significant figures.

A car increases its speed from 9.5 meters per second to 13.6 meters per second in 3.3 seconds. What is the average acceleration of the car during this time interval?

Referring to Figure 1.10 in Chapter 1 of the text (reproduced below), compare the magnitudes of the average accelerations for Hare and the Tortoise.

A car is initially at rest at time t=0. 17.2 seconds later, the car has reached a speed of 16 m/s. What was the magnitude of the car's average acceleration over this stretch of time? a = _ _ _ _ _ _ m / s 2

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单