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Derivation of Velocity-Time Relation by Graphical Method

When a car dr...

Question

When a car driver travelling at the speed of 10m/s applies brakes and brings the car at rest 20 s . The retardation will be ?

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Solution

Dear student,

u =10m/s,v =0, t =20s

so we can find
a = v-u / t , a = 0 - 10/20, = -0.5.

That will be the retardation.

Regards.

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Similar questions

When a car driver travelling at a speed of 10 $\frac{m}{s}$ applies brakes and brings the car to rest in 20s, then retardation will be :

(a) $+ 2 m / s^{2}$ (b) $- 2 m / s^{2}$ (c) $- 0.5 m / s^{2}$ (d) $+ 0.5 m / s^{2}$

20 m/s

4 sec

A

B

v_{A}

v_{B} (v_{A} > v_{B})

A

d

B

A

a

10 m/s

4 {m/s}^{2}

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