Answer:
Explanation:2
v = c / n (n = 1 for air)
v = c / 1.33 = 3 * 10E8 m/s / 1.33 = 2.25 * 10E8 m/s
312.5
Explanation:
we know that
s= ut + 1/2 at^2
= 0*5+1/2*25*5^2
= 0+ 625/2
=312.5
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0.6