A horizontal force of 350 NN is exerted on a 2.0-kgkg ball as it rotates (at arm's length) uniformly in a horizontal circle of radius 0.90 mm. Part A Calculate the speed of the ball. Express your answer to two significant figures and include the appropriate units.

The value is  

Explanation:

From the question we are told that

    The horizontal force is  

    The mass of the ball is  

     The radius is    

Generally the speed of the ball is mathematically evaluated from  the formula for  centripetal force as

=>      

=>      

=>      

the answer would be c

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)