An electric skateboard, including its battery pack, has a total mass of 15.0 kg. It is equipped with four small wheels, each with a mass of 0.30 kg and a diameter of 0.10 m. If the electric motor applies a force of 50.0 N to propel the skateboard forward, calculate its acceleration if it is initially at rest. Assume that the wheels can be modeled as solid cylinders and that there are no frictional losses.

• A. $2.5 \mathrm{~m} / \mathrm{s}^{2}$
• B. $3.1\mathrm{~m}/\mathrm{s}^2$
• C. $3.2m/s^2$
• D. $\text { 4. } 5 \mathrm{~m} / \mathrm{s}^{2}$

Answer: (C)