The velocity at the midway point of a ball able to reach a height y when thrown with velocity v_i at the origin is: A) $\frac { v _ { i } } { 2 }$ B) $\sqrt { v _ { i } ^ { 2 } 2 g y }$ C) $\sqrt { \frac { v _ { i } ^ { 2 } } { 2 } }$ D) $\sqrt { v _ { i } ^ { 2 } + 2 g y }$ E)gy

Question

Quizplus · Accepted Answer

At the midway point, the kinetic energy is half of the initial kinetic energy, so the velocity is $\sqrt{\frac{v_i^2}{2}}$.

The Velocity at the Midway Point of a Ball Able vi2\frac { v _ { i } } { 2 }2vi​​

The Velocity at the Midway Point of a Ball Able $\frac { v _ { i } } { 2 }$