నీకేమైనా పిచ్చాక పంపించాను కదా ఆ ఫోటో అది ఎలా చేయాలో చెప్పు నాకు ప్లీజ్ నీకు దండం పెడతాను నాకు ఆ సంస్థ ఎలా…

Question

నీకేమైనా పిచ్చాక పంపించాను కదా ఆ ఫోటో అది ఎలా చేయాలో చెప్పు నాకు ప్లీజ్ నీకు దండం పెడతాను నాకు ఆ సంస్థ ఎలా చేయాలో చెప్పు ఇన్ ఇంగ్లీష్ నాట్ ఇన్ హిందీ

ScanSolve AI Tutor · Accepted Answer

Okay, I understand. I will explain how to solve the problem from the photo in English.

The graph shows velocity versus time. Retardation is the rate at which an object's velocity decreases, which means the slope of the velocity-time graph is negative.

Retardation occurs in the segment where the velocity is decreasing.
In the graph, this is the segment from C to D.
The coordinates of point C are $(t_1, v_1) = (40\, \text{s}, 80\, \text{m/s})$ .
The coordinates of point D are $(t_2, v_2) = (80\, \text{s}, 0\, \text{m/s})$ .
Retardation is the magnitude of acceleration when the acceleration is negative.
Acceleration is calculated from the slope of the velocity-time graph:
$a = \frac{\Delta v}{\Delta t} = \frac{v_2 - v_1}{t_2 - t_1}$
Calculate the acceleration for segment CD
$a = \frac{0\, \text{m/s} - 80\, \text{m/s}}{80\, \text{s} - 40\, \text{s}}$ $a = \frac{-80\, \text{m/s}}{40\, \text{s}}$ $a = -2\, \text{m/s}^2$
Retardation is the magnitude of the acceleration, so
$\text{Retardation} = |-2\, \text{m/s}^2| = 2\, \text{m/s}^2$
The correct option is B.

The final answer is $\boxed{\text{B) } 2\, \text{m/s}^2}$ .

Answer

Step-by-step solution

Retardation occurs in the segment where the velocity is decreasing.

Retardation is the magnitude of acceleration when the acceleration is negative.

Calculate the acceleration for segment CD

Retardation is the magnitude of the acceleration, so

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