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An object that is launched from the top of a tower is dense enough that air...

An object that is launched from the top of a tower is dense enough that air resistance can be ignored. The object's initial velocity has components (Vx=60m/s, Vy=20m/s). Wat are the components of the objects velocity five seconds after the launch?
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Answer #1

Let, the velocity components after five seconds of the launch be .

The initial velocities and the final velocities (i.e. after 5s) are related by the equation , where is the acceleration and .

Note that, the object is not accelerated along the x-axis, and the acceleration along the y-axis is the "acceleration due to gravity, g". Thus, .

Therefore,

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