Answer:
The acceleration of the skateboarder is 2.067 m/s²
Step-by-step explanation:
Given;
initial velocity of the skateboarder, u = 0.8 m/s
final velocity of the skateboarder, v = 7 m/s
time of motion, t = 3 s
The acceleration of the skateboarder is given as;

Therefore, the acceleration of the skateboarder is 2.067 m/s²