Answer:
a) Yes, the mechanical energy of the system is conserved because they were no friction in the system.
b) Yes, the momentum of the system is conserved because the two car continued to move after collision and without friction.
c) No, the mechanical energy of the system is not conserved because the car is gaining speed due to gravitational force acting on the car as it roll down the hump.
d) No, the momentum of this system is not conserved because the car gains speed as it moves down, which changes the momentum of the car.
e) No, mechanical energy of the system is not conserved because the car is slowing down, that means frictional force is acting the oppose the motion of the car.
f) No, momentum of the system is not conserved because the velocity of the car has reduced after collision, which will cause the momentum of the system to change
Lorena should probably try to create more ideas relevant to the subject and elaborate on them.
<h3><u>
Explanation:</u></h3>
Lorena should add more material of her own in the speech. She should avoid repeating her examples or previous lines. By adding more sub-topics that are relevant to the topic, she will be able to talk on more than five minutes and educate the listeners with an expansion of the subject of her speech.
She can also try to present more examples that do not give away the impression of being monotonous in nature.
Answer:
change the word "recall" to the word "rehearsal"
Explanation:
In order to make a lasting memory the long term connections of brain cells need to be made. These connections can be made by repeatedly exposing yourself to the thing you want to remember.
In the case of short term memory the connections are made and replaced by other memories in a short span of time.
Even after a long term memory connection has been made the brain needs to be exposed to the thing you want to remember or else they too will be replaced by newer memories.
