Abody makes six complete revolution in 4.0sec if it makes in a circle of raduis 25.0cm calculate th linear velocity

The distance around a circle is (2 · π · radius) .

Length of one revolution = (2 · π · 25 cm)

One revolution = 157.1 cm

One revolution = 1.571 meter

Six revolutions = (6 · 1.571 meter) = 9.425 meters

Speed = (distance covered) / (time to cover the distance)

Speed = (9.425 meters) / (4.0 sec)

Speed = 2.36 m/s

think about the oscillation of the toy shown in the video. when the toy is at the highest point of its motion, its velocity is zero and its acceleration is negative.

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation: