1.

A car starting from rest atains avelocity of 60 km/h in 10 min. Calculate the acceleration and distance traveled by The care, assuming that acceleration is uniform​

Answer»

\large\frak{given} \begin {cases} \:  \sf initial \: velocity (u)=   \frak{0} km/hr \\  \sf  \: final \: velocity(v) =  \frak{60}km/hr \\  \sf  \: time(t) =  \frak{10 \: min =   \red{\dfrac{1}{6}  hr}}\end{cases}

  • Intial Velocity is 0km/hr because the vehicle is starting from the REST.
  • We are provided with above information from the question and we are asked to find the acceleration of this car and distance traveled by this car.
  • So, First we have to CALCULATE the value of acceleration by using 1ST equation of motion.

: \implies \underline{ \boxed { \pink{{\frak{v = u + at}}}}}

\:  \:  \:  \:  \:  \:  \:  \dag \:  \underline  \frak{substituting \: the \: given \: values \: in \: the \: equation : -  }

\:  \:  \:  \:  \:  \:  \:   : \implies \bf  \: 60 = 0 + a  \bigg(\dfrac{1}{6}  \bigg)

\:  \:  \:  \:  \:  \:  \:   : \implies \bf  60 =  \dfrac{a}{6}

\:  \:  \:  \:  \:  \:  \:   : \implies \bf a = 6 \times 60

\:  \:  \:  \:  \:  \:  \:   : \implies   {\boxed{ \pink{\frak{a = 360 m/ {s}^{2} }}}} \bigstar

  • Now, we are going to find the distance traveled by this car with the help of 3rd equation of motion.
  • you can USE 2nd equation as well... there will be no change in the answer but for the sake of my simplicity I'm using 3rd equation :)

: \implies \underline{ \boxed { \pink{{\frak{v²=u²+2as}}}}}

  • the letter "s" introduced in this equation represents "distance traveled by the body"

\:  \:  \:  \:  \:  \:  \:  \dag \:  \underline  \frak{substituting \: the \: given \: values \: in \: the \: equation : -  }

\:  \:  \:  \:  \:  \:  \:   : \implies \bf \:  {(60)}^{2}  =  {(0)}^{2}  + 2(360)s

\:  \:  \:  \:  \:  \:  \:   : \implies \bf \: 3600 = 0 + 720s

\:  \:  \:  \:  \:  \:  \:   : \implies \bf \: s =   \cancel\dfrac{3600}{720}

\:  \:  \:  \:  \:  \:  \:   : \implies   {\boxed{ \pink{\frak{s = 5 \: m }}}} \bigstar

\therefore {\underline{ \sf {our \: respective \: answers \: are  \: 360m {s}^{ - 2} \: and  \: 5 \: m}}}

i hope it's beneficial :D



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