A hockey puck with a mass of 0.18 kg is at rest on the horizontal frictionless surface of the rink. A player applies a horizontal force of 0.5 N to the puck. Find the speed and the traveled distance 5s
later.

Given :

A hockey puck with a mass of 0.18 kg is at rest on the horizontal frictionless surface of the rink.

A  player applies a horizontal force of 0.5 N to the puck.

To Find :

The speed and the traveled distance 5s  later.

Solution :

Acceleration is :

a = F/m

a = 0.5/0.18 = 2.78 m/s² .

Now, velocity after 5 seconds is given by :

v = 0 + 2.78×5 m/s

v = 13.9 m/s

Also, distance travelled :

Therefore, speed and the traveled distance 5 s later is 13.9 m/s and 34.75 m.

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.