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Standard IX

Physics

Time and Speed

A train trave...

Question

A train travels $700 m$ in $35 s$ . What is its speed in $k m h^{- 1}$ ?

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Solution

Given,
$d = 700 m$ ; covered distance
$t = 35 s$ ; time taken
Speed in metre per second
$v = \frac{Distance}{Time}$

$\Rightarrow v = \frac{700}{35}$
$\Rightarrow v = 20 m s^{- 1}$
Speed in kmph, multiply $v (m s^{- 1})$ with $\frac{18}{5}$
$\Rightarrow v = \frac{18}{5} \times 20$
$\Rightarrow v = 72 k m p h$

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A train travels 700 m in 35 s. What is its speed in kmh−1?

Given,d=700 m; covered distancet=35 s; time takenSpeed in metre per secondv=DistanceTime⇒v=70035⇒v=20 ms−1Speed in kmph, multiply v(ms−1) with 185⇒v=185×20⇒v=72 kmph

A train travels $700 m$ in $35 s$ . What is its speed in $k m h^{- 1}$ ?