A 20 g ball of clay is thrown horizontally at 30 m/s toward a 1.0 kg ball sitting at rest on a frictionless surface. The clay hits and sticks to the block. a. What impulse does the clay exert on the block?

b. What impulse does the block exert on the clay?

c. Does ?

i think its c if i'm wrong

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.

not too sure thinking all accelerations are pointed down