Answer:
B a measure of the amount of matter in an object
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Answer:
Explanation:
Newton’s Second Law of Motion says that acceleration (gaining speed) happens when a force acts on a mass (object). Riding your bicycle is a good example of this law of motion at work. Your bicycle is the mass.
It is stable if the atom has a full outer shell
Acceleration = change in velocity divided by time taken...
I.e Acceleration = (Final velocity - Initial Velocity) /time taken...
The question says the body accelerate from rest... Therefore it's initial velocity = 0
It reach a speed(velocity) of 20m/s.. My final velocity
And the time taken to attain the velocity = 5 seconds....
Therefore
acceleration = (20-0)/5
a = 20/5
a = 4ms¯²
Hope this helped....
