Question

The heart is pumping blood at x kg per unit time, with a constant velocity v. The force required is

• A. xv
• B. $v\frac{dx}{dt}$
• C. $x\frac{dv}{dt}$
• D. $\frac{x}{v}$

Answer 1

Answer: (A)

xv

Answer 2

Answer (a) xv