Fill in the blanks.
To launch,a rocket or spacecraft has to overcome the________________which opposes its motion.It also needs to overcome the___________________which pulls it downwards.
I.S. Fill in the blanks.
2011-01-25 5:26 am
回答 (3)
2011-01-25 2:30 pm
To launch, a rocket or spacecraft has to overcome the AIR RESISTANCE which opposes its motion. It also needs to overcome the GRAVITY which pulls it downwards.
2011-01-25 8:32 am
1. reaction force
2. gravity
Just try.
by Jeffrey
2. gravity
Just try.
by Jeffrey
2011-01-25 5:32 am
收錄日期: 2021-04-29 17:10:59
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