Question

What will be answer of this question

Intial velocity=80km/h

Final velocity=60km/h

Time Taken =5 sec

What will be it's Acceleration​

Answer 1

Answer:

$a \: = \: \frac{v - fv}{t}$

$a \: = \: \frac{80 - 60}{5}$

$a \: = \: \frac{20}{5}$

$4 \: km \: per \: sec \: is \: the \: acceleration$

HOPE IT HELPS YOU

Answer 2

Given :-

• Initial Velocity(u) = 80km/hr

• Final Velocity(v) = 60km/hr

• Time Taken(t) = 5sec = $\dfrac{5}{3600}$hr

To Find :-

• Acceleration

Answer :-

• 14400m/s²

Concept Used :-

$\huge\bf{ \underline{ \boxed{a\:=\:\dfrac{v-u}{t}}}}$

Solution :-

$\sf{a\:=\:\dfrac{v-u}{t}}$

$\sf{a\:=\:\dfrac{60-80}{\dfrac{5}{3600}}}$

$\sf{a\:=\:\dfrac{-20\times3600}{5}}$

$\sf{a\:=\:\dfrac{-20\times\cancel{3600}}{5}}$

$\sf{a\:=\:-20\times720}$

$\sf{a\:=\:-14400m/\ s^{2}}$

$\huge\bf{ \underline{ \underline{It \:is\: negative}}}$