Final answer:
The pulling force can be found by subtracting the force of friction from the calculated force using Newton's second law of motion.
Step-by-step explanation:
To determine the pulling force, we need to consider Newton's second law of motion, which states that force is equal to mass multiplied by acceleration (F = m * a). In this case, the acceleration of the skateboard is given as 2 m/s². The force of friction between the skateboard and the road is 30 N. We can use the equation F = m * a to find the mass of the skateboard, and then subtract the force of friction to find the pulling force.
Let's assume the mass of the skateboard is 'm'. The force of friction is 30 N. Substituting the values into the equation: 30 N = m * 2 m/s². rearranging the equation, we get m = 30 N / 2 m/s² = 15 kg.
Now, to find the pulling force, we can use the equation F = m * a again. Substituting the values: F = 15 kg * 2 m/s² = 30 N.
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