a train is accelerating at a rate of 2.0km/hr/s. if it's initial velocity is 20km/hr, what is it's velocity after 30 seconds​

the answer is a. hope this .

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.

i believe the answer is electric potential.

explanation:

answer///isobars;