Answer:
6.5 seconds
Step-by-step explanation:
Keep in mind that when
, this is the same height for both when the model rocket takes off and lands, so when the rocket lands, time is positive. Thus:

So, the amount of seconds that the model rocket stayed above the ground since it left the platform is 6.5 seconds
Answer:
45.6
Step-by-step explanation:
trust me bro(don't)
Answer:
Width is 30mm
Step-by-step explanation:
Volume = L×W×H
Volume= 165,000 mm³
Length= 100mm
Height= 55mm
Width= ?
L×H
100mm×55mm= 5500mm
volume ÷ L×W
165,000÷5500=30
width= 30mm
L×W×H=V
100×55×30=165000
Answer:
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1. 5.75x29.99 (the totals the answer)
2. 7.5x649.999
Do you understand what I'm trying to show? Do it with all of them and you should have the answers... but sorry if its wrong. Its been a while since I learned this.