Answer:
A
Explanation:
At constant speed, acceleration=0
From the formula, Fnet=ma (Resultant force= mass x acceleration), sub a=0
Fnet=0
Since the resultant force=0, the pushing force is equal to the frictional force
Answer:
Thunderstorm is a high-speed wind which accompanied by heavy-rain fall, lightening and thunder. Cyclones are low-pressure system with high wind speeds formed.
I'm pretty sure it's not C and D, because we can't gain mass (I don't think so), so, I think it might be A and E. (I'm not 100% sure though) Sorry :(
Its alos why ammonia is great fro cleaning greasy stoves. Hope I could be of help! :)