A small toy school bus rear-ends a big toy school bus initially at rest. The bigger bus is several times heavier than the smaller one.
Which of the following statements are true if the collision is totally inelastic?

a) The two busses continue together at the same speed.
b) Mechanical energy is conserved.
c) The small bus exerts the same amount of force on the big bus as vice versa.
d) Momentum is conserved.
e) The small bus will go backwards.

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.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;