Answer:
750 mph, east
Explanation:
The jetliner is going from San Francisco to Chicago... so it's moving from West to East, at 600 mph, relative to the air.
The wind is also moving from West to East, at 150 mph.
Since both are going in the same direction, we combine the speeds by adding them to each other. If they were in opposite direction, we would subtract them.
So, 600 mph for the plane + 150 mph for the wind = 750 mph, going EAST.
A class action law suit is one in which the courts allow several
people who all claim to have been harmed to pool grievances
and sue for damages on behalf of the group.
Answer:
Correct answer: E total = 2,800 J
Explanation:
Given:
m = 4 kg the mass of the object
V = 20 m/s the speed (velocity) of the object
H = 50 m the height of the object above the surface
E total = ? J
The total energy of an object is equal to the sum of potential and kinetic energy
E total = Ep + Ek
Ep = m g H we take g = 10 m/s²
Ep = 4 · 10 · 50 = 2,000 J
Ek = m V² / 2
Ek = 4 · 20² / 2 = 2 · 400 = 800 J
E total = 2,000 + 800 = 2,800 J
E total = 2,800 J
God is with you!!!
