A particle moving with an initial velocity of 5 $m s^{- 1}$ is subjected to a uniform acceleration of -2.5 $m s^{- 2}$ . Find the displacement in the next 4 seconds.

40 m

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0 m

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20 m

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60 m

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Solution

The correct option is B 0 m
Given : $u = 5 m / s$ $a = - 2.5 m / s^{2}$ $t = 4 s$
Displacement $S = u t + \frac{1}{2} a t^{2}$
$∴$ $S = 5 \times 4 + \frac{1}{2} (- 2.5) (4)^{2} = 0 m$

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A particle moving with an initial velocity of 5 ms−1 is subjected to a uniform acceleration of -2.5 ms−2. Find the displacement in the next 4 seconds.

The correct option is B 0 mGiven : u=5 m/s a=−2.5 m/s2 t=4 sDisplacement S=ut+12at2∴ S=5×4+12(−2.5)(4)2=0 m

A particle moving with an initial velocity of 5 $m s^{- 1}$ is subjected to a uniform acceleration of -2.5 $m s^{- 2}$ . Find the displacement in the next 4 seconds.

The correct option is B 0 m
Given : $u = 5 m / s$ $a = - 2.5 m / s^{2}$ $t = 4 s$
Displacement $S = u t + \frac{1}{2} a t^{2}$
$∴$ $S = 5 \times 4 + \frac{1}{2} (- 2.5) (4)^{2} = 0 m$