Answer :
Answer:
She is wrong,
Step-by-step explanation:
V²=U²+2×a×s.
We have,
V=4, U=3 and A=7
Substituting,
4²=3²+2*7*s
16=9+14s
16-9=14s
7=14s
s=1/2
She gets, a=6+14S. which is wrong, even if you do not put value for a,
4²=3²+2*a*s
16-9=2as
7=2as
7/2s=a