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Derivation of Position-Velocity Relation by Graphical Method

car driver tr...

Question

car driver travelling at a speed of 10 metre per second applies brakes and bring the correct to rest in 20 seconds then the retardation will be

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Solution

Dear student,

$i n i t i a l v e l o c i t y, u = 10 m / s f i n a l v e l o c i t y, v = 0 t i m e t a k e n, t = 20 s B y e q u a t i o n o f m o t i o n, v = u + a t; w h e r e a i s t h e a c c e l e r a t i o n \Rightarrow a = \frac{v - u}{t} = \frac{0 - 10}{20} = - 0.5 m / s^{2} H e n c e, r e t a r d a t i o n i s 0.5 m / s^{2} .$

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Derivation of Position-Velocity Relation by Graphical Method

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