Answer:

Explanation:
The acceleration is the derivative of the velocity. Therefore, we need to differentiate each component of the velocity to find the components of the acceleration first.
The velocity along the x-axis is:

Differentiating,

Similarly, the velocity along the y-axis is:

Differentiating,

So now we have the components of the acceleration; substituting t = 6.23 s, we get:

And so the magnitude of the acceleration is

Answer:
The longer "far-infrared" waves
Explanation:
The longer "far-infrared" waves are closer to the microwave section on the electromagnetic spectrum, and can be felt as intense heat, such as the heat from sunlight or fire
the SL unit of acceleration is the meter per second squared