Question

In 400 meter race an athlete covers 80 second to complete . find his speed

Answer 1

speed is 5 m/s

refer attachment

Answer 2

❒ Given :-

• Distance = 400m
• Time taken = 80s

❒ To Find :-

• Speed = ?

❒ Solution :-

✧ We know that :

$\: \: \: \: \: \: \: \: {\blue{\bigstar{\underline{\boxed{\pink{\bf{Speed = \frac{Distance }{Time} }}}}}}}{\blue{\bigstar}}$

✧ Speed :

${\large{:{\longmapsto \: \: \: \: \: \: \: {\bf{Speed = \frac{Distance }{ Time} }}}}}$

${\large{:{\longmapsto \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {\bf{ \frac{40{\cancel0}}{ 8{\cancel{0}}} }}}}}$

${\large{:{\longmapsto \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {\bf{{\cancel \frac{40}{ 8 }}}}}}}$

${\large{\red{:{\dashrightarrow{\underline{\boxed{\bf{5 m/s}}}}}}}}$

✧ Therefore :

${\huge{\green{\underline{\orange{\underline{\mathfrak{Speed = 5 m/s}}}}}}}$

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