Your heart pumps 80 g of blood with each beat.The blood starts from rest and reaches a speed of 0.60 m/s in the aorta.If each beat takes 0.16 s,the average force exerted on the blood is

Question

Quizplus · Accepted Answer

The mass of blood pumped with each beat is 80 g = 0.08 kg. 
The final velocity of blood is 0.60 m/s. 
The time taken for blood to reach this velocity is equal to the time for one beat, which is 0.16 s.

Using the equation: 
average force = (mass x final velocity)/time

we get: 
average force = (0.08 kg x 0.60 m/s)/0.16 s 
average force = 0.30 N

Therefore, the best choice is D) 0.30 N.

Your Heart Pumps 80 G of Blood with Each Beat ×\times×

Your Heart Pumps 80 G of Blood with Each Beat $\times$