If you Drop 2 objects..

[csx]

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object I is dropped from 20 meter. Object II is thrown down at 5 m/s.

What are there final velocities?

I used:
Vf^2=Vi^2 + 2ad

for both and I come out to a number that is almost identical for final velocity. How can that be...? Shouldn't object II be substantially faster? By my calculations it only comes out to 0.6 m/s faster which doesnt sound right to me.

 

[Teleologist]

You should:

1) Componetize. Deal with x and y-axis velocities separately.

2) Then find the magnitude of the velocity after you figure each component velocity.

 

[BenzylAcetate]

object I is dropped from 20 meter. Object II is thrown down at 5 m/s.

What are there final velocities?

I used:
Vf^2=Vi^2 + 2ad

for both and I come out to a number that is almost identical for final velocity. How can that be...? Shouldn't object II be substantially faster? By my calculations it only comes out to 0.6 m/s faster which doesnt sound right to me.

Calculations are correct, think about the logic this way.

The objects will only accelerate for the time that gravity is acting on them before they hit the ground. Object 2 will be in the air for a shorter period of time than object 1 so object 2 will accelerate for a shorter period of time. At 1 second object 1 has travelled 5 meters and has a speed of ~10 m/s, object 2 has a speed of ~15 m/s but has already travelled 10 meters.

 

[csx]

You should:

1) Componetize. Deal with x and y-axis velocities separately.

2) Then find the magnitude of the velocity after you figure each component velocity.

It is not thrown at an angle so I don't have to componetize?