Question

please help, will medal
A car starts from rest at a stop light and reaches 20 m/s in 3.5 s. Determine the acceleration of the car.
A)
3.5
m
s2
B)
5.7
m
s2
C)
20
m
s2
D)
70
m
s2

Answer 1

Ik how to do this but for some reason RN I don't know which formula to use

Answer 2

@Michele_Laino

Answer 3

i got it

Answer 4

its 5.7 ms 2

Answer 5

acceleration \(a\) is given by the subsequent fromula:
\[\huge a = \frac{v}{{\Delta t}} = \frac{{20}}{{3.5}} = ...?\]