1. A ball increases speed on a ramp from rest to 8 m/s in in 3.5 s. What is the acceleration of the ball? A. 2.29 m/s2
B. 28 m/s2
C. -0.44 m/s2
D. - 2.29 m/s2

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.

a. are

because if the tool that you are using is not balanced it there would be false mass.