A=5 m/s^2
t=7s
what does velocity equal

Velocity is 35 m/s

Explanation:

Assuming the initial velocit was 0 m/s :

a = 5 m/s^2

t = 7s

So we use the formula for accelartion:

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.