If a block is set sliding on a huge frictionless plane in contact with the Earth,it will NOT continue to move at constant speed because
A)of its inertia.
B)gravity will pull in a non-perpendicular direction as the block gets farther out on the plane.
C)gravity gets weaker as distance increases.
D)it is not free from the shackles of Earth's gravity.

Question

Quizplus · Accepted Answer

The block will not continue to move at a constant speed because of the gravitational force acting on it in a non-perpendicular direction as it moves farther out on the plane. This force is called the component of weight or weight component and is responsible for accelerating the block in the direction of the plane's incline. Therefore, the correct answer is B. The other options are not valid explanations for the block's motion on the plane. A is incorrect because the block's inertia will keep it moving unless acted upon by an external force like gravity. C is incorrect because gravity remains constant at an approximate value of 9.8 m/s^2 near the Earth's surface, irrespective of the distance. D is incorrect because the block is not in direct contact with the Earth's surface but is moving on a frictionless plane.

If a Block Is Set Sliding on a Huge Frictionless