Finding plane velocity from acceleration and time

[rfurtado]

Homework Statement

A 7000. kg plane is launched from a aicraft carrier in 2.0 sec. by a force of 350,000 N.

a) What is the plane's acceleration?
b)What is the plane's velocity after the two seconds?

Homework Equations

A=f/m => A=350,000/7000 = 50 m/s2

The Attempt at a Solution

The main question is: How am I supposed to find the velocity if they don't give me the distance? and how do I find the distance if I still not knowing the velocity?

*I figured that a Aircraft Carrier is 500m (distance) then I made the formula for velocity, but I don't know if I am doing the right way*
(final result were v=200 m/s)

 

[PhanthomJay]

Homework Statement

A 7000. kg plane is launched from a aicraft carrier in 2.0 sec. by a force of 350,000 N.

a) What is the plane's acceleration?
b)What is the plane's velocity after the two seconds?

Homework Equations

A=f/m => A=350,000/7000 = 50 m/s2

The Attempt at a Solution

The main question is: How am I supposed to find the velocity if they don't give me the distance? and how do I find the distance if I still not knowing the velocity?

*I figured that a Aircraft Carrier is 500m (distance) then I made the formula for velocity, but I don't know if I am doing the right way*
(final result were v=200 m/s)

you don't need to know the distance, you can get the velocity from another kinematic equation that relates velocity with acceleartion and time. You didn't do it right, you should show how you arrived at that v=200m/s figure or d =500m value, both of which are not correct.

 

[Sabellic]

I think another relevant equation is missing and that is:

a=vf-vi/t

where a is acceleration
vf is final velocity (in this case the velocity after the time allotted)
vi is initial velocity
t is time