The time-dependent pressure and flow rate are measured downstream of an artificial heart valve situated within an experimental mock circulation of the human body.

The signals are sampled at a rate of 160 Hz.

The valve opens and closes with the heart rate at 75 beat per minute.

Blocks of data are recorded at 128 samples per block.

What is the frequency resolution of the sampled data? How many signal (heart beat) cycles are included in each block of 128 samples?

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Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction 

Iwould have to say sorry i can't elaborate more. hope this though!