Question

in second a body moving with coolarm acelmo the discordies Ten lo men second in a zom in 4th scord of it mosuan calculations the it in the 5th distance moved by in the 5th second​

Answer 1

Explanation:

sn distance travelled in n sec-distance travelled in (n-1) sec

sn=(u1n+21an2)−(u1(n−1)+21a(n−1)2)

     =u1+21a(n2−(n−1)2)

     =u1+2a(+2n−1)=u1+an−2a

Comparing with: sn=0.4n+9.8

a=0.4,u1−20.4=9.8

u1−20.4=9.8

u1=10 m/s

Answer 2

Answer:

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