知识点:Projectile Motion
例题
Q: The path of a projectile is shown.
The projectile landed at a height lower than the height from which it was launched.
Assuming there is no air resistance acting on the porjectile, which of the following is a correct statement?
A. At the maximum height, the horizontal velocity is a minimum.
B. At the maximum height, the vertical velocity is a maximum.
C. The initial horizontal velocity is equal to the final horzontal velocity.
D. The initial vertical velocity is equal to the final vertical velocity.