Question

calculate the speed of a car which moves a distance of 15 km for a time of 15 minutes.
plz solve ​

Answer 1

Answer :-

Given:-

Distance covered by the car = 15 Km

Time taken to cover the distance = 15 minutes

We know that,

Speed = Distance/Time taken

Here,

• Distance = 15 × 1000 = 15000 m
• Time = 15 × 60 = 900 sec

Hence,

⟹ Speed = 15000/900

⟹ Speed = 16.66 m/s

∴ The speed of the car is 16.66 m/s.

Answer 2

Information provided with us:

• Distance travelled is 15km
• Time taken by the car is 15 minutes

What we have to calculate:

• Speed of the car

Using Formula:

• $\dag \: \underline{ \boxed{ \sf{S \: = \dfrac{D}{ T} }}}$

Where,

• S is speed
• D is distance
• T is time taken

Let us begin:

$\red \bigstar \: \underline{ \sf{Converting \: the \: time \: which \: is \: in \: minutes \: into \: seconds:-}}$

We know that,

• 1 minute contain 60 seconds

$:\longmapsto \: \sf{T \: = \: 15 \times 60}$

$:\longmapsto \: \sf{T \: = \: 600s}$

• Thus, time taken is 900s

$\red \bigstar \: \underline{ \sf{Converting \: the \: distance \: which \: is \: in \: kilometres\: into \: metres:-}}$

We know that,

• 1 kilometres contains 1000 metres

$:\longmapsto \: \sf{D \: = \: 15 \times 1000}$

$:\longmapsto \: \sf{D \: = \: 15000m}$

• Thus, distance is 15000 m

$\red \bigstar \: \underline{ \sf{Substituting \: the \: values \: in \: the \: given \: formula:-}}$

$: \implies \: \sf{S \: = \: \dfrac{15000}{900} }$

• On cancelling them,

$: \implies \: \sf{S \: = \: \dfrac{ \cancel{15000}}{ \cancel{900}} }$

$: \implies \: \sf{S \: = \: \dfrac{150}{9} }$

$: \implies \: \sf{S \: = \: \dfrac{ \cancel{150}}{ \cancel{9}} }$

$: \implies \: \sf{S \: = \: \dfrac{ 50}{3}}$

$: \implies \: \sf{S \: = \: \cancel \dfrac { 50}{3}}$

$: \implies \boxed{\: \bf{S \: = \: 16.66 }}$

• Thus, the speed of the car is 16.6 m/s