I assume that in this item, we are asked to solve for the force exerted during the heartbeat. Force is the product of the mass and acceleration. To solve for the acceleration in this item, we divide the velocity by time.
a = 1 m/s / 0.2 s = 5 m/s²
Then, we multiply this by the mass (in kg)
F = (80 g / 1000 g/kg) x (5 m/s²)
= 0.4 kg m/s² = 0.4 J
Therefore, every hearbeat will take 0.4 J of force.
It's important because it is easy to apply it too tightly and impede circulation. Allows for smoother fit and prevents gaping caused by variation in contour of the limb.
Dark Energy explains:
How groups of objects function together, and also to keep the universe expanding
Hope this helped.
Follicle-Stimulating Hormone (FSH) and Luteinizing (LH)