Answer:
( 80.87 i - 12.96 j ) m
Explanation:
Running back movements :
20⁰ north of east for 10 meters,
Runs straight east for 60 meters
runs 35⁰ east of south for 20 meters
A) show vector pointing from the starting point to the end ( where he scored )
The final vector displacement : ( 80.87 i - 12.96 j ) m
which is : 81.90 m, 9.10⁰ south of east
attached below is the required diagram
Answer: Approximately 11.76 joules per second
=========================================================
Work Shown:
Mass = 40 kg
Force pulling down = (mass)*(gravity) = 40*9.8 = 392 newtons
Roughly 392 newtons of force are pulling down on her.
To climb the steps, she must apply 392 newtons of force upward.
---------------
Displacement = 20*(15 mm) = 300 mm = 0.3 m
Work = Force*Displacement
Work = 392*0.3
Work = 117.6 joules of energy
---------------
Power = (Work)/(Time)
Power = (117.6 joules)/(10 seconds)
Power = (117.6/10) joules per second
Power = 11.76 joules per second, which is approximate
Answer:
The surfaces can be compared by the presence of craters.
Explanation:
The surface of all terrestrial planets will be dominated by craters as a consequence of different impacts.
For example, in the case of Earth and other planets there was a time on the Solar System era with a great amount of collisions of different objects. Due to volcanic activity and other processes on the Earth's surface the craters of the impacts were erased.
Notice that this is not the case for objects of low mass like the Moon, which have a surface with several craters.
The atmospheres of planets have an important role in the amount of impacts the surface will suffer. Once the meteoroid enters the atmosphere of the planet, it can be disintegrated as a result of the friction between them.
In the case of the Moon, doesn't have an atmosphere so its surface is full of craters.
So, in this hypothetical scenario and with all that, it was already discussed that is easy to get to the conclusion that the terrestrial planets can be compared by the presence of craters in its surfaces.
Answer:
W= 210 N
Explanation:
Just use work = Fparallel*d
W= 35*6
W= 210 N
The definition of matter is physical substance in general, as distinct from mind and spirit that which occupies space and possesses rest mass, especially as distinct from energy, which basically means that matter makes up the whole Earth and everything on it. <span />