Question

please solve it I will mark u as brainlist​

Answer 1

Answer:

5.5 s

I hope it's helped ☺️ you

Answer 2

Answer:

option (d) 2.5 s

Explanation:

acceleration a=4m/s ^2

velocity v= 1m/s

t=0

d=10 m

s=ut+1/2 at^2

0=-t+1/2×4×t^2

2t^2 -t-10 =0

2t^2 +4t-5t-10 = 44

2t(t+2) -5(t+2)

(2t-5) (t+2)

=2t -5 =0

t= 2.5s