Question: A particle is projected vertically upward in a constant gravitational field with an initial speed v0. Show that if there is a retarding force proportional

A particle is projected vertically upward in a constant gravitational field with an initial speed v0. Show that if there is a retarding force proportional to the square of the instantaneous speed, the speed of the particle when it returns to the initial position is

Where vt is the terminal speed.

Vvž + vi

Vv + vi

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