試題詳解

2.Consider a projectile launched upward near the surface of Earth from the origin at some angle θ0 to the horizontal, with initial speed v0. The horizontal position x can be calculated as x = v0cosθ0t. On the other hand, under the influence of gravity with gravitational acceleration g, the height y can be expressed by a function of x as
(A)
(B)
(C)
(D)
(E)