Which two of the following forces must always reduce the total mechanical energy of an object when present in a motion situation in which an object is sliding across a surface? ▪︎Spring
▪︎Applied
▪︎Tension
▪︎Gravity
▪︎Friction
▪︎Air Resistance
▪︎Normal​

step-by-step explanation:

we are given

we have to simplify it

firstly, we will factor it

now, we can cancel like terms

now, we can combine it

so, we get

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2

i'm on my way to history not a mistory.