Answer:
0.99 m/s
Explanation:
t = Time taken = 4.4 seconds
u = Initial velocity
v = Final velocity
s = Displacement = 60 m
a = Acceleration = -5.75 m/s²
[tex]s=ut+\frac{1}{2}at^2\\\Rightarrow u=\frac{s-\frac{1}{2}at^2}{t}\\\Rightarrow u=\frac{60-\frac{1}{2}\times -5.75\times 4.4^2}{4.4}\\\Rightarrow u=26.29\ m/s[/tex]
[tex]v=u+at\\\Rightarrow v=26.29+(-5.75)\times 4.4\\\Rightarrow v=0.99\ m/s[/tex]
The car hits the tree at 0.99 m/s
