Astudent whirls a rubber stopper attached to a string in a horizontal circle above her head. if the radius of the stopper in circular motion is a constant 50.00 cm, and the time it takes the stopper to make one full revolution is 0.2500 seconds, what is the tangential speed of the stopper?

Explanation:

As we know that the radius of the circular motion is given as

time period of the motion is given as

now we know that it is moving with uniform speed

so it is given as

now plug in all data

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