Final answer:
To find the initial velocity of an object with a known change in velocity due to gravity after a certain time, the equation V = V0 - 32t is used. By rearranging and plugging in the loss of velocity and the time, the initial velocity is calculated as 161 ft/s.
Step-by-step explanation:
The student is tasked with finding the initial velocity of an object that experiences a change in velocity due to the acceleration of gravity. With an equation provided that describes a velocity change over time, the student must work backwards to determine the initial velocity using the given loss in velocity after a specific time.
Given the velocity equation V = V0 - 32t where V is the final velocity, V0 is the initial velocity, and t is time in seconds, we can begin to solve the problem. After four seconds, the velocity loss is 33 ft/s, so the equation can be rearranged to V0 = V + 32t. Plugging in the values, we get V0 = 0 + 32(4) + 33, which gives us an initial velocity V0 = 161 ft/s.