contestada

A car accelerates from rest for 8.0 s, and reaches a speed of 66 m/s. How far will the
car travel?
a) 8448 m
b) 2112 m
c) 264 m
d) 528 m

Respuesta :

GeorgePP

Answer: C

Explanation:

Find the acceleration using this kinematic equation:

[tex]v_f=v_i+at\\66=0+a*8\\a=8.25m/s^2[/tex]

Now use this kinematic equation to find the displacement:

[tex]v_f^2=v_i^2+2a*d\\66^2=0^2+2(8.25)d\\4356=16.5d\\d=264m[/tex]