If a block is set sliding on a huge imaginary frictionless plane ...

[Mr3Hunna]

If a block is set sliding on a huge imaginary frictionless plane in contact with Earth's surface, it will NOT sustain a constant speed because
 
  A) a component of gravitational force parallel to the plane soon acts on it.
  B) gravity gets weaker as distance increases.
  C) it is not free from the shackles of Earth's gravity.
  D) of its inertia.

Question 2

To make a profit a buyer purchases metal by weight at one altitude and sells it at the same price per pound at another altitude. The supplier should
 
  A) buy at a high altitude and sell at a low altitude.
  B) buy at a low altitude and sell at a high altitude.
  C) it makes no difference.

[duke02]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: A

[Mr3Hunna]

TYSM

[samiel-sayed]

Gracias!