NEED HELP FAST. If anybody is great with Geometry or Physical Science, PM me.

The mass of an electron is

A) equal to the mass of the proton and the neutron

B) not significant to the overall mass of the atom

C) higher than the mass of the proton or the neutron

B

Explanation:

I say it's B because I eliminated answers. A is wrong because the mass of an electron is 5.489×10−4 and the mass of a proton and neutron is 1.674929 x 10-27 kg. It's not C because the mass of a proton and neutron is greater than an electrons. Therefore it's B is greater

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

it would be c. predictability