- #1
amochang
- 1
- 0
I'm a newbie to this subject, so forgive me if what I'm asking supposed to be common sense.
An airplane travels 280 m down the runway before taking off. If it starts from rest, moves with a constant acceleration, and becomes airborne in 8.00 s, what is its speed in m/s, when it takes off?
So, I think what is given is d=280m then t=8.00s and it is implied that it's initial velocity is 0. And what is asked is the speed or velocity...
Here's the thing. My friend keeps telling me that I should find first acceleration before speed, but I keep saying that I can simply just use d/s. Then, that conversation left me confused.
So, what formula should I really use?
An airplane travels 280 m down the runway before taking off. If it starts from rest, moves with a constant acceleration, and becomes airborne in 8.00 s, what is its speed in m/s, when it takes off?
So, I think what is given is d=280m then t=8.00s and it is implied that it's initial velocity is 0. And what is asked is the speed or velocity...
Here's the thing. My friend keeps telling me that I should find first acceleration before speed, but I keep saying that I can simply just use d/s. Then, that conversation left me confused.
So, what formula should I really use?