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Standard XII

Physics

Uniform and Non Uniform

A block of ma...

Question

A block of mass $2 k g$ starts moving with initial speed of $10 m / s$ and accelerates at $- 2 m / s^{2}$ . How far does the object travel before coming to rest?

10 m

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25 m

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50 m

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75 m

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100 m

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Solution

The correct option is B $25 m$
Given that: $m = 2 k g; u = 10 m / s; a = - 2 m / s^{2}$

Using third equation of motion:
$\Rightarrow v^{2} = u^{2} + 2 a S$
$\Rightarrow 0 = 10^{2} + 2 (- 2) S$
$\Rightarrow S = \frac{100}{4} = 25 m$

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A block of mass 2 kg starts moving with initial speed of 10 m/s and accelerates at −2m/s2. How far does the object travel before coming to rest?

The correct option is B 25mGiven that: m=2 kg;u=10 m/s;a=−2 m/s2Using third equation of motion:⇒v2=u2+2aS⇒0=102+2(−2)S⇒S=1004=25 m

A block of mass $2 k g$ starts moving with initial speed of $10 m / s$ and accelerates at $- 2 m / s^{2}$ . How far does the object travel before coming to rest?

The correct option is B $25 m$
Given that: $m = 2 k g; u = 10 m / s; a = - 2 m / s^{2}$

Using third equation of motion:
$\Rightarrow v^{2} = u^{2} + 2 a S$
$\Rightarrow 0 = 10^{2} + 2 (- 2) S$
$\Rightarrow S = \frac{100}{4} = 25 m$