Question

A car starting from rest accelerates at a rate of 8 0 m/s/s. What is its final speed at the end of 40 seconda?

i have no idea what is if you know the answer, can you please answer it?

Answer 1

Answer: 320 m/s

Explanation: V initial = 0, V final= ? Acceleration = 8m/s/s t=40s

So at the end of V 40 sec= v intial + acceleration x Δt = 0 +8m/s² x 40s = 320m/s

Answer 2

you have to organize the data. a= acceleration vi=inicial velocity vf=final velocity t=time.

a=80m/s

vi=0

vf=?

t=40 s

the formula you have to use is:

vf=vi+a*t (final velocity= inicial velocity plus acceleration times time)

Step-by-step explanation:

I was the best one at my class, hope it helped