Question

 body is moving with an acceleration 2 metre per second square then what is the change in velocity in 2 seconds


1 m/s

2 m /s

3 m/s

4 m/s

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Answer 1

AnswEr :

• Change in the velocity will be 4 m/s.

GivEn :

• Acceleration = 2 m/s²

• Time = 2 s

To find :

• Change in velocity (∆V) = ?

SoluTion :

To solve the above question you need to know about acceleration and what does change in velocity exactly means!

More to be easy, acceleration of a body or an object is a change in velocity per unit time .

It is given by,

$\large \dag \: { \boxed{ \tt{ \purple{a = \frac{\triangle \: v }{t} }}}}$

where,

• a = acceleration

• ∆V = change in velocity

• t = time taken

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By applying the above formula ,

$\tt \dashrightarrow \: \: \: a = \dfrac{\triangle \: v }{t}$

$\tt \dashrightarrow \: \: \: \triangle \: v = a \times t$

$\tt \dashrightarrow \: \: \: \triangle \: v = 2 \times 2$

$\tt \dashrightarrow \: \: \: { \underline{ \boxed{ \tt{ \blue{\triangle \: v = 4 \: m/s}}}}}$

Therefore, change in velocity is ${ \tt{ \red{ 4 \: m/s .}}}$

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Answer 2

Given;

a=2m/s^2
t=2 sec


Acceleration =change in velocity /total time

2m/s^2= change in velocity/2sec
Change in velocity =4m/s