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skad [1K]
3 years ago
7

Find the initial velocity of a car which........ ​

Physics
1 answer:
Alexandra [31]3 years ago
5 0

  • u = 25 m/s

Explanation:

<h3>Given Data,</h3>

\sf\:\:\:\:\:\:\:\:\:\:\bullet\:Initial \:velocity,\: u=?

\sf\:\:\:\:\:\:\:\:\:\:\bullet\:Final\: velocity, \:v=0m/s

\sf\:\:\:\:\:\:\:\:\:\:\bullet\:Acceleration,\: a=−2.5m/s^2\sf\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:| negative\:'cause\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\sf \:\:\:\:\:\:\:\:it\:is\: deceleration|

\sf\:\:\:\:\:\:\:\:\:\:\bullet\:Time, \:t=10s

\:\:

\Large{\diamond}\:{\bold { \underline{\small{ Use\: the\: relation\: of \:the\: first\: eqn. \:of \:motion:}}}}

\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\ddagger\underline{ \boxed{ \sf{v\:=\:u\:+\:at }}}

\:

\sf\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\leadsto\:0=u+(−2.5)×10

\:

<h3>\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\underline{\boxed{\sf{u=\frak{\red{25m/s}}}}}</h3>
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