An object at rest starts moving at a uniform acceleration of $2 m s^{- 2}$ . The distance travelled by it in $2 s$ is

2 m

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3 m

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4 m

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5 m

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Solution

The correct option is C
4 m

Given, acceleration $a = 2 m s^{- 2}$ , initial velocity $u = 0 m s^{- 1}$ and time $t = 2 s$ .

Let distance travelled be $s$ .

We use second equation of motion, $s = u t + \frac{1}{2} a t^{2}$ .

So, $s = 0 \times 2 + \frac{1}{2} 2 \times 2^{2}$

On soving we get $s = 4 m$

Therefore, distance travelled by it in $2 s$ is 4 m.

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An object at rest starts moving at a uniform acceleration of 2 ms−2. The distance travelled by it in 2 s is

The correct option is C 4 m Given, acceleration a=2 ms−2, initial velocity u=0 ms−1 and time t=2 s. Let distance travelled be s. We use second equation of motion, s=ut+12at2. So, s=0×2+122×22 On soving we get s=4 m Therefore, distance travelled by it in 2 s is 4 m.

An object at rest starts moving at a uniform acceleration of $2 m s^{- 2}$ . The distance travelled by it in $2 s$ is