Question

which describes an object in projectile motion?
○ gravity acts to push the object sideways.
○ the object moves in a straight path.
○ the forward velocity of the object is 0 m/s.
○ the object’s inertia carries it forward.

Explanation:

• Gravity acts downward, not sideways, so the first option is wrong.
• Projectile motion follows a curved (parabolic) path, not straight, so the second option is wrong.
• Projectile motion has a non-zero constant horizontal (forward) velocity, so the third option is wrong.
• In projectile motion, the horizontal motion is maintained by the object's inertia (Newton's first law), as no horizontal forces act on it (ignoring air resistance).

Answer:

The object's inertia carries it forward.