Acar traveling at a speed of 24 m/s comes to a stop at a red light. how much time will it take for the car to stop if its acceleration is –8.0 m/s2?

3 seconds

In this case;

Final velocity = 0 m/s (because the car is going to rest by stopping)

Initial velocity = 24 m/s

Acceleration = -8.0 m/s²

Thus; - 8.0 m/s² = (0-24 m/s)/ t

           time = (-24 m/s)/-8.0 m/s²

                    = 3 seconds

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.