Answer:


Explanation:
(a)
Given:
- mass of comet,

- velocity of the comet,

<u>Now, the kinetic energy of the comet can be given by:</u>



(b)
Given:
- energy released by 1 megaton of TNT,

<u>Now the kinetic energy of the comet in terms of energy of 1 megaton TNT:</u>

i.e.

Answer: Elevators use pulleys to function.
A cargo lift system that allows for items to be hoisted to higher floors is a pulley system.
Explanation:
Answer:
In a straight line
Explanation:
Why, because of the power of inerta
Answer:
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