Answer:
[tex]11\frac{m}{s}[/tex]
Explanation:
As per the Newton's first law of motion,
[tex]v = u + at\\[/tex]
where "v" is the final speed
"u" is the initial speed
"a" is the acceleration
and "t" is the time taken
Substituting the given values in above equation, we get -
[tex]v = 2 + (1.5)*6\\= 2 + 9\\= 11[/tex] [tex]\frac{m}{s}\\[/tex]
The cart be traveling at a speed of [tex]11 \frac{m}{s}[/tex] by the time it reaches level ground.