An auto manufacturer advertises that their car can go "from zero to sixty in eight seconds." this is a description of what characteristic of the car's motion? a) instantaneous speed b) displacement c) average speed d) instantaneous acceleration e) average acceleration

option D

Explanation:

If a₁ and a₂ are accelerations of the car at two times, the average acceleration can be calculated as:

The instantaneous acceleration is the change in velocity in a time interval:

The car goes from 0 m/s to 60 m/s in 8 s refers to the instantaneous acceleration of the car.

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.

option number c is the right answer.