Question

A particle moving with an initial velocity of 5m/s is subjected to a uniform acceleration of -2.5m/s2. Find the displacement in the next 4 sec.

Answer 1

HEY.......
HERE IS U R ANSWER
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u = 5
t = 4
a = -2.5

s = ut + 1/2 at^2
= 5*4 + 1/2 (-2.5) 16
= 20 - 20
= 0
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HOPE IT WILL HELP YOU A LOT....
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Answer 2

$\blue{\bold{\underline{\underline{Answer:}}}}$

$\tt\green{\therefore{{Displacement=0\:m}}}$

$\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$

$\green{\underline \bold{Given :}}$

$\tt:\implies {Initial \: velocity(u) = 5 \: m/s }$

$\tt:\implies {Acceleration(a) =-2.5 \: m }/{s}^{2}$

$\tt:\implies {Time(t) = 4 \: sec}$

$\red{\underline \bold{To \: Find :}}$

$\bold{By \:Third \: equation \: of \: motion}$

$\tt:\implies s = ut + \frac{1}{2} a {t}^{2}$

$\tt:\implies {Displacement= ?}$

$\tt:\implies s = 5 \times 4 + \frac{1}{2} \times (-2.5) \times {4}^{2}$

• Given Question

$\tt:\implies s = 20 -\frac{1}{2} \times 2.5 \times 16$

$\tt:\implies s = 20 -20$

$\green{ \tt:\implies s = 0 \: m}$