Answer :
Final answer:
The linear speed of a rotating wheel with a radius of 15 cm and rotating at 20 rpm is approximately 1.57 m/s.
Explanation:
The linear speed of the wheel can be calculated using the formula:
linear speed = radius x angular speed
Given that the radius is 15 cm (0.15 m) and the wheel is rotating at 20 rpm, we convert the rpm to radians/second and then substitute the values to find that the linear speed is approximately 1.57 m/s.