Final answer:
The value of velocity (v) at a specific time (t = 25 s) can be calculated using the relevant kinematic equation for constant acceleration: v = vo + at. To find the value of v, one needs to know the initial velocity (vo), acceleration (a), and the time at which to find v.
Step-by-step explanation:
The student is inquiring about the value of v at a given time (t = 25 s) for a physics problem related to motion and velocity. The context provided also discusses the equations of motion, specifically mentioning variables such as initial velocity (vo), acceleration (a), and displacement (x), as well as flow rate and its relevance to heart rates and cardiac output. To calculate the value of v, you must use an equation from kinematics that relates velocity, initial velocity, acceleration, and time. The most appropriate equation for this scenario, where only acceleration, initial velocity, and velocity are given and time needs to be calculated, is v = vo + at. By substituting the known values into this equation, you can solve for v at a specific time.