summarize your observations about the relationships between molecular mass (heavy vs light), kinetic energy, particle speed, and temperature

See explanation

Explanation:

Given that the kinetic energy of particles is obtained from; Ek = 1/2 mu^2. The speed of particles is given by c = [3RT/M]^1/2.

From what we can see in the graphs with heavy particles, they only have higher peaks while the lighter particles have lower peaks of kinetic energy and  particle speed.

From the graphs and the temperatures used, it is evident that the shape of the graphs were almost the same. Temperature appears not to have any outstanding effect on it.

i. like it i'm gonna edit it tomorrow

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.