A block of mass m is initially at rest at the top of an inclined plane, which has a height of 5.1 m and makes an angle of θ = 20° with respect to the horizontal. After being released, it is observed to be traveling at v = 0.75 m/s a distance d after the end of the inclined plane as shown. The coefficient of kinetic friction between the block and the plane is μp = 0.1, and the coefficient of friction on the horizontal surface is μr = 0.2.

Answer;

B) Juan and Kuri complete one revolution in the same time, but Juan travels a shorter distance and has a lower speed.

Explanation;

Linear speed is the distance traveled per unit of time, while tangential speed (or tangential velocity) is the linear speed of something moving along a circular path.

The tangential velocity is the velocity measured at any point tangent to a turning wheel. Thus tangential velocity, vt is related to the angular velocity of the wheel, ω, and the radius of the wheel, r.

A point on a circular path such as outside edge of a merry-go-round or turntable travels a greater distance in one complete rotation than a point nearer the center.