A ground-to-ground projectile passes two points having the same height, one during ascent and the other during descent. Which statements are correct?
Select all that apply

Question

A ground-to-ground projectile passes two points having the same height, one during ascent and the other during descent. Which statements are correct?

G1 Physics · Accepted Answer

At equal heights, mechanical energy gives equal speed. The horizontal component remains constant throughout the motion. The two points are symmetric about the highest point, so their vertical velocity components have equal magnitudes and opposite signs. Therefore A, B and C are correct. The full velocity vectors are not identical.