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While an object is in projectile motion (with upward being positive) with no air resistanceGroup of answer choicesthe horizontal component of its velocity remains constant and the vertical component of its acceleration is equal to -g.the vertical component of its velocity remains constant and the vertical component of its acceleration is equal to -g.the horizontal component of its velocity remains constant and the vertical component of its acceleration is equal to zero.the horizontal component of its velocity remains constant and the horizontal component of its acceleration is equal to -g.none of thesethe vertical component of both its velocity and its acceleration remain constant.

Question

While an object is in projectile motion (with upward being positive) with no air resistanceGroup of answer choicesthe horizontal component of its velocity remains constant and the vertical component of its acceleration is equal to -g.the vertical component of its velocity remains constant and the vertical component of its acceleration is equal to -g.the horizontal component of its velocity remains constant and the vertical component of its acceleration is equal to zero.the horizontal component of its velocity remains constant and the horizontal component of its acceleration is equal to -g.none of thesethe vertical component of both its velocity and its acceleration remain constant.

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Solution

The correct answer is "the horizontal component of its velocity remains constant and the vertical component of its acceleration is equal to -g."

Here's why:

  1. In projectile motion, the only force acting on the object (assuming no air resistance) is gravity. Gravity acts vertically downwards, providing a constant acceleration of -g. This means the vertical component of the object's acceleration is -g.

  2. The horizontal component of the object's velocity remains constant because there are no horizontal forces acting on the object (again, assuming no air resistance). This means there is no horizontal acceleration to change the horizontal velocity.

So, the object moves with a constant horizontal velocity and a constant vertical acceleration due to gravity.

This problem has been solved

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