In the absence of air resistance, a ball is thrown vertically upward with initial speed v. An identical ball is thrown upward with initial speed 2v. If the first ball reaches a maximum height h, what maximum height will the second ball reach?
A)8h
B)4h
C)2h
D) $\sqrt { 2 }$ h
E)h

Question

Quizplus · Accepted Answer

The maximum height reached by a projectile is proportional to the square of its initial speed. If the initial speed is doubled, the maximum height will be four times greater, hence 4h.

In the Absence of Air Resistance, a Ball Is Thrown 2\sqrt { 2 }2​

In the Absence of Air Resistance, a Ball Is Thrown $\sqrt { 2 }$