Question

A bicycle increases its velocity from 10 km/h to 15 km/h in 6 seconds calculate the acceleration.

Answer 1

Hello Dear !
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As you know !
v-u/t = a 
here v = final velocity   = 15 km/h  = 4.16m/s
        u = initial velocity = 10 km /h =2.77 m/s
        a = acceleration   =  ?
        t  = time                = 6s
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a = 4.16-2.77/6  
   = 1.39/6 
   = 0.23 m/s²
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Answer 2

Aɴꜱᴡᴇʀ

$\huge{\sf\red{a=3.706{ms}^{2}}}$

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Gɪᴠᴇɴ

Initial velocity of bicycle = 10kmph

Final velocity of bicycle = 15kmph

Time interval = 6s

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ᴛᴏ ꜰɪɴᴅ

Acceleration of the bicycle

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Sᴛᴇᴘꜱ

We know that,

Acceleration is defined as ratio of change in velocity to the time interval.

Converstion :-

1kmph = 5/18mps

15kmph = 4.17mps

10kmph = 2.78mps

Then,

$\begin{lgathered} \boxed{\sf\:a=\dfrac{v-u}{t}}\\ \\ \leadsto\sf\:a=\dfrac{4.17-2.78}{6}\\ \\ \dashrightarrow\:{\sf{\pink{\large{a=3.706\:ms^{-2}}}}}\end{lgathered}$

$\large \tt \bigstar{}Additional \: information$

Acceleration is a vector quantity.

Accelerataion has both magnitude as well as direction.

Acceleration can be positive, negative and zero.

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$\huge{\mathfrak{\purple{hope\; it \;helps}}}$