Answer:
1800 meters
Explanation:
Average speed=1.2 m/s
time= 1500 secs
Displacement = average speed × time
= 1.2 × 1500
=1800 meters
the enclosed may help. earth rotes and you and i are fixed to it. air flows it's own path ...
Use energy conservation, since no energy is lost it must be constant.
E = 0.5mv² + mgh
At release the velocity v = 0 and the height is h.
E = 0 + mgh
At impact the height h = 0 and the velocity is v.
E = 0.5mv² + 0
Since the energy E is conserved:
0.5mv² = mgh
the mass m cancels and the equation becomes:
0.5v² = gh
h = 0.5v²/g
when g = 9.81 and v = 22:
h = 24,66
Set up a proportion
1 mile/1.6 km = 20,000miles/x
Cross Multiply
x = (20,000) * (1.6)
x = 32,000 kilometers
Answer:The pressure must be the same throughout the lift, so
P = F1/A1 = F2/A2 ⇒
A2 = (F2/F1)A1
F2 = 1,100 N
F1 = 15,000 N
A1 = 10 m2
Plug in the numbers and evaluate A2. The answer will come out in m2.
Explanation: