A. All natural radiation is at a level low enough to be safe
With position vector

the particle then has velocity

and acceleration

Then
, then particle's velocity and acceleration are, respectively,

and

The following are the answers to
the question presented:
<span>a. </span>magnitude of
the radial acceleration = 1.25m/s² inwardly directed
<span>b. </span>tangential
acceleration = 0.400m/s²
<span>c. </span>total
acceleration = 72.25 degrees
I am hoping that these answers
have satisfied your queries and it will be able to help you in your endeavors, and
if you would like, feel free to ask another question.
Answer: The right answer is b)
Explanation:
By definition, acceleration is the change in velocity (in module or direction) over a given time interval, as follows:
a = (v-v₀) / (t-t₀)
If we take t₀ = 0 (this is completely arbitrary), we can rewrite the equation above, as follows:
v = v₀ + at
We can recognize this function as a linear one, where a represents the slope of the line.
If a is constant, this means that the relationship between the change in velocity and the change in time remains constant, in other words, in equal times, its velocity changes in an equal amount.
Let's suppose that a = 10 m/s/s. (Usually written as 10 m/s²).
This is telling us that each second, the velocity increases 10 m/s.