Acar with tires of radius 25.0 cm accelerates from rest to 30.0 m/s in 10.0 s. when the car's speed is 2.00 m/s find the linear acceleration of the top of the wheel relative to (a) the center of the wheel, (b) the road. (note that there will be a vertical and horizontal component to the acceleration.

Answer

given,                                    

radius of tire = 25 cm = 0.25 m

initial velocity = 0 m/s                

final velocity = 30 m/s                  

time = 10 s                                        

a) acceleration with respect to center  

   v = u + a t                      

   30 = 0 + 10 a                      

    a = 3 m/s²                            

   radial acceleration            

acceleration w.r.t center of tire =

b) acceleration with respect to road will be equal to 3 m/s²

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it