Un bloque de masa m 1 sobre una superficie horizontal rugosa se conecta a una bola de masa m 2 mediante una cuerda ligera sobre una polea ligera sin fricción, como se muestra en la figura. al bloque se aplica una fuerza de magnitud f en un angulo ? con la horizontal como se muestra, y el bloque se desliza hacia la derecha. el coeficiente de fricción cinetica entre el bloque y la superficie es µ k. determine la magnitud de la aceleración de los dos objetos.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.

there are no contact forces mentioned on the list of choices that you've provided.