HSC Physics Practice Questions - HSC Physics (NSW Higher School Certificate, Year 12) Exam

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A projectile is launched from flat ground with an initial velocity vector at an angle to the horizontal. Neglecting air resistance, which statement correctly describes its horizontal and vertical motion?

Horizontal acceleration is constant and non-zero, while vertical acceleration decreases to zero at the peak. Horizontal velocity remains constant, while vertical acceleration remains constant and directed downwards. Horizontal velocity decreases linearly, while vertical velocity remains constant. Both horizontal and vertical accelerations change continuously throughout the trajectory.

Correct Answer:

Horizontal velocity remains constant, while vertical acceleration remains constant and directed downwards.

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