Question

A car takes 20 min to cover a distance of 15 km calculate the speed in km per hour and m per second

Answer 1

Explanation:

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Answer 2

Explanation :-

Given :

Time taken (t) => 20min

Distance travelled (s) => 15km

To Find :

Speed in km/hr and m/s = ?

Solution :

Speed in km/hr :-

We know,

$\sf{}Speed=\dfrac{Distance\ travalled}{Time\ taken}$

$\sf{}\implies \dfrac{15km}{20min}$

$\sf{}\implies \dfrac{3km}{4min}$

$\sf{}\therefore 0.75km/hr$

Therefore,speed in km/hr is equal to 0.75

Speed in m/s :-

20 min = 300 s        [1 min = 60 s]

15 km = 15000 m    [1 km = 1000 m]

We know,

$\sf{}Speed=\dfrac{Distance\ travalled}{Time\ taken}$

$\sf{}\implies \dfrac{15000m}{300s}$

$\sf{}\implies \dfrac{150m}{3s}$

$\sf{}\therefore 50m/s$

Therefore,speed in m/s is equal 50.