Question

Find his speed in m/s. A car travels at 47 km/hr. How far will it travel in 5 hours at this speed?




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Answer 1

Given;

• Speed of Car = 45 Km/hr

• Time taken ,t = 3 hours

To Find:

• The distance traveled by car = ?

Formula Used:

$\\ \bigstar \: \: {\underline{\underline { \boxed{ \bf{\purple{speed \: = \dfrac{distance}{time}}}}}}}$

where,

• Speed = 45 Km/hr
• Time = 3 hrs
• distance= ? (to be calculated )

Solution:

✰ calculating the distance traveled by car;

$\\\sf \dashrightarrow \: speed \: = \dfrac{Distance}{time}$

$\sf \dashrightarrow \: 45 \: = \dfrac{Distance}{3}$

$\sf \dashrightarrow \: Distance = 45× 3\:$

$\sf \dashrightarrow \: Distance = 135 \: km\:$

Therefore, the distance travelled by the car is 135 Km.

Answer 2

Answer:

Car will travel $235\ km$ in 5 hours at speed of $47 \ km /hr$ .

Step-by-step explanation:

To find : How far car will travel in 5 hours .  Find its speed in m/s .

Given : . A car travels at 47 km/hr.

Solution :

• As per given data we know that a car travels at 47 km/hr i.e. speed of car is 47 km/hr . We have to find is speed in m/s  and how far car will travel in 5 hours .

• As we know, $1 (kilometer/hour )=1000( meter ) / 3600( second )$  which can also be expressed as $1 (kilometer/hour) =\frac{5}{18} ( meter/second)$ which is simplified form.
• Therefore, to convert we directly multiply given value of speed by the fraction $\frac{5}{18}$
• Hence, we get $=47\times \frac{5}{18} (meter/second)$

                                  $= 13.05\ m /sec$

• Hence , speed in meter /sec is $13.05 \ m /sec$ .
• Now to find distance , we use following formula ,  
• $Speed = \frac{Distance }{Time }$

         $47 = \frac{Distance }{5} \\\\Distance = 47\times 5\\\\ Distance = 235\ km /hr$