Answer:
I think It Should be Star B
Explanation:
Answer:
Explanation:I don't say you have to mark my ans as brainliest but if you think it has really helped you plz don't forget to thank me...
Answer: they will rise up because hydrogen is lighter in density and it's weight is lower when it's in the air
Explanation:
VF=0
Vi=60mph
T=4.0s
you need to convert hours to seconds... so you do there is 60 minutes in an hour and there is 60 seconds in a minute so you do 60*3=180
180/4.0=45m/s^2