Question

A man walks on a straight road from his home to market 3 km away with a speed of 6 km / h. The time taken by the man to go from his home to market equal

Answer 1

Answer:

Time taken by man ti go fro m his home to market,

t1=distancespeed=3km6km/h=12h=30min

Time taken by man to go from market to home,

t2=3km9km/h=13h=20min

Total time taken=t1+t2=12+13=−56h

=50min

(i) 0→30min

(a) Average velocity =displacementtime

=3.0km(1/2)h=6km/h

(b) Average speed =(path lenght)/(time) =(3.0 km )/((1//2) h)=6 km //h(ii)0 to 50 minTotalpath≤nthcoverad=3.0 +3.0=6.0 kmTotaldisplacement=(displacement 0 /(time)Totaldisplacement=zero

(a) Average velocity =displacrmrnttime

=0(5/6)h=0

(b) Average speed =→talpath≤n>htime

=6km(5/6)j=7.2km/h

(iii) 0→40min

Distance moved in 30min(omhome→market)=3.0km

Distance moved in 10min(ommarket→home)withspeed9 km //h=9xx (10)/(60) =1.5 km.So,displacement=3.0 -1.5 =1.5 kmTotalpath≤n>htravel≤d3.0+ 1.5=4.5 km(a)Avera≥velocity=(1.5km)/((400//60)h) =2.25 km //k(b)Avera≥speed=(4.5 km)/9(40.60)h) =6.75 km //h`

Explanation:

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Answer 2

${\purple{\underline{\underline{\bf{\pink{Solution:-}}}}}}$

$\mathfrak{\underline{AnswEr:-}}$

• The time taken by the man to go from his home to market = 30 minutes

$\mathfrak{\underline{Given:-}}$

• A man walks on a straight road from his home to market 3 km away with a speed of 6 km/hour.

$\mathfrak{\underline{Need\:To\: Find:-}}$

• The time taken by the man to go from his home to market = ?

${\purple{\underline{\underline{\bf{\pink{Explanation:-}}}}}}$

$\:\:\:\:\dag\bf{\underline \green{Formula\:used\:here:-}}$

$\star\large{\boxed{\sf\red{Speed = \dfrac{Distance}{ Time} }}}$

$\:\:\:\:\dag\bf{\underline \blue{Putting\:the\:values:-}}$

$\longrightarrow \sf {6 = \dfrac{3}{Time} }$

$\longrightarrow \sf {Time = \dfrac{\cancel{3}}{\cancel{6}}\:}$

$\longrightarrow \sf {Time = \dfrac{1}{2}}$

$\longrightarrow \sf {Time = 0.5\:h}$

$\longrightarrow \sf {Time = 30\: minutes}$

$\:\:\:\:\dag\bf{\underline{\underline \red{Hence:-}}}$

• The time taken by the man to go from his home to market is 30 minutes.

$\rule{200}{2}$