Answer:
Explanation:
just use the gravational force equation which is G x m of earth x m of object divided by r squared (which is radius of earth)
The slope of a position/time graph is the speed of the motion.
(The slope doesn't 'determine' the speed; it only displays it.)
The slope of a speed/time graph is the acceleration of the motion.
Distance between Davien's school and beach, D = 50 km.
Also, Davian's house is 10 km closer to the beach than the school.
So, distance between Davien's house and beach, d = 40 km.
Speed of Davian, s = 40 km/h.
Now, time taken is given by :
Therefore, Davien reach the beach at 1 : 30 P.M .
Hence, this is the required solution.
So as a fact we do not know if the boat "burned tires" to reach the buoy :) the average velocity is +1,11 m/s. 20m divided by 18 seconds is +1.11 m/s
Answer:
True
Explanation:
There are several geologic evidences that points to the fact that the earth has undergone different episodes of erosion and mountain building.
These evidences are the key to James Hutton's proposition of the "law of Uniformitarianism". The law which states that " the present is the key to the past and geologic processes that are occurring today have occured in the times past".
Evidences of erosion can be found mostly in sedimentary rock layers. Some of them occur as time gaps/lapses within rock units and they are called unconformity surfaces. Sometimes we can see them as erosional features in sedimentary beds.
Evidences of mountain building can be found in different Orogenic cycles terranes have been placed into. The earth is a dynamic planet and the internal heat engine combines with surface forces to move rocks through different types. Some areas believed to have been raised continental platforms are now stable cratons and shields. Dating rocks from such terrane would reveal several episodes of deformation which corresponds to mountain building cycles..