On a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water at 1.5s later. I

Question

EastWind [94]

3 years ago

6

On a hot summer day several swimmers decide to jump into a river. They step off the bridge and strike the water at 1.5s later. I

gnore air resistance. What is the height of the bridge?
I did it but I don’t know if it’s right

Physics

1 answer:

Lilit [14] · Answer 1 · 2022-06-14T05:05:47+03:00

Lilit [14]3 years ago

6 0

The only equation you need is the Δy = v₀t + 1/2at², and in this case, v₀t = 0 because the swimmers are starting from rest. Therefore, Δy = 1/2at², and that is 1/2 x (10m/s²) x (1.5)² = 11.25m.
With sigfigs it is 11m.