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

b would be the answer

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles