Un niño en su bicicleta, paseando en un parque, se desplaza en línea recta desde un punto situado a 2 metros del origen con una velocidad inicial de 3 m/s y una aceleración constante de 2 m/s2. ¿Qué velocidad alcanzará cuando pasen 10 segundos? AYUDAA
(Datos) (Exp. Matematica) (Reemplazo) (Resultado)
vi = ... m/s
vf = ... m/s
t = ... s
a = ... m/s²

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2