A stationary car is stopped at a traffic light. When the light turns green at t = 0, a truck with a constant speed of 25m/s passes the car. The car uniformly accelerates to its top speed (30m/s) in 10 s then moves at a constant speed. How long will it take for the car to catch up with the truck?

it would be c. predictability

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.