A car started a race from START line and from rest, and accelerated with the acceleration of 3 m/s2 for 8 seconds. Then the decelerated with the acceleration of -1.6 m/s2 and went with that acceleration for 15 seconds. What was the car’s position from the START line after 8+15 seconds from the start of the race? Choose the answer closest to yours.

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.