Question

pls answer this physics question​

Answer 1

Answer:

15m

Explanation:

uinitial=72×185=20m/s

adeceleration=2m/s2

(a)s=ut+21at2

v=u+at

v=0

u−adect=0

20=2×t

t=10s

s=20×10−21×2×100

s=100m

(b)t=10s

(c)snth=u+2a(2n−1)

s1st=20−22(2×1−1)

s1st=19m

s3rd=20−22(2×3−1)

s3rd=15m