Question

an athlete runs 1500 metres in 4 minutes. Calculate her average speed in metres per minute

Answer 1

GivEn:-

• Distance travelled by an Athlete = 1500 metres

• Time taken by athlete to run = 4 minutes

To find:-

• Calculate her average speed in metres per minute.

SoluTion:-

$\;\;\;\sf\star\;{\underline{\boxed{\sf{\pink{As\;per\;giVen\; QueStion\;-}}}}}\;\star$

✇ Athlete runs 1500 metres in 4 minutes.

As we knOw that,

★ ${\boxed{\bf{\purple{Speed = \dfrac{Distance}{Time}}}}}$

✩ Lets speed be S m/min

✇ Now, Put the givEn values -

$:\implies\sf S = \cancel{ \dfrac{1500}{4}}$

$:\implies\sf \red{S = 375\;m/min}$ ★

$\therefore\sf \underline{Average\;Speed\;of\;an\; Athlete\;is \bf{375\;m/min}}$

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✇ Now, We convert 4 minutes into seconds -

$\dashrightarrow\sf 4 \times 60 = 240\;sec$

$\therefore$ Speed in m/s -

$:\implies\sf S = \cancel{ \dfrac{1500}{240}}$

$:\implies\sf S = \dfrac{25}{4}$

$:\implies\sf \red{S = 6.25\;m/s}$ ★

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Additional Information:-

⠀⠀⠀⠀⠀✩ $\sf Speed = \dfrac{Distance}{Time}$

⠀⠀⠀⠀⠀✩ $\sf Velocity = \dfrac{Displacement}{Time}$

⠀⠀⠀⠀⠀✩ $\sf Acceleration = \dfrac{Final\; Velocity - Initial\; Velocity}{Time\;Taken}$

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