A particle moving with an initial velocity of $10 m/s$ on a straight path is subjected to a uniform acceleration of $- 5 {m/s}^{2}$ . Find the displacement in the next $4 s$ .

80 m

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40 m

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20 m

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Zero

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Solution

The correct option is D Zero
Displacement,

$s = u t + \frac{1}{2} a t^{2}$

$\Rightarrow s = 10 \times 4 + \frac{1}{2} (- 5) \times 4^{2}$
$\Rightarrow s = 0 m$

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A particle moving with an initial velocity of 10 m/s on a straight path is subjected to a uniform acceleration of −5 m/s2. Find the displacement in the next 4 s.

The correct option is D Zero Displacement, s=ut+12at2 ⇒s=10×4+12(−5)×42 ⇒s=0 m

A particle moving with an initial velocity of $10 m/s$ on a straight path is subjected to a uniform acceleration of $- 5 {m/s}^{2}$ . Find the displacement in the next $4 s$ .

The correct option is D Zero
Displacement,

$s = u t + \frac{1}{2} a t^{2}$

$\Rightarrow s = 10 \times 4 + \frac{1}{2} (- 5) \times 4^{2}$
$\Rightarrow s = 0 m$