How do we solve this?

D e a r s t u d e n t, H e r e x = 10 m u = 100 m / s e c a = - 10 m / s e c^{2} t = 2 s e c N o w a t t = 2 s e c t h e p o s i t i o n o f t h e p a r t i c l e i s, x' = x + u t + \frac{1}{2} a t^{2} O r, x' = 10 + 100 \times 2 + \frac{1}{2} \times - 10 \times 2^{2} O r, x' = 10 + 200 - 20 O r, x' = 10 + 180 T h e r e f o r e x' = 190 m O p t i o n (d) i s c o r r e c t R e g a r d s

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