What is the value of acceleration in the following graph: - Vidyadip

Question

What is the value of acceleration in the following graph:

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Answer

According to the graph the object is in a non-uniform motion as it is continuously retarding.

In this graph

time = 40sec

initial velocity = u = 50m/s

final velocity = v = 0m/s

so acceleration $=\text{a}=\frac{(\text{v}-\text{u})}{\text{t}}$

$=\frac{(0-5)}{40}$

$=-\frac{50}{40}$

$=-\frac{5}{4}=1.25\text{m/s}^{2}$

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