Grandma henderson challenges michael johnson in the 400-meter dash. Grandma h spins her wheelchair wheels 5 times and gives up 15 meters from the starting line. Mj makes a complete circle around the track and stops at the starting line. In this race who has the greatest average speed?

Blood pressure the total amount of blood the heart pumps in one minute 2. cardiac output the number of times your heart beats in a minute 3. dilate the amount of blood that the heart can pump in a single beat 4. heart rate the force exerted on the walls of the blood vessels by the blood that moves through them 5. stroke volume to widen or get larger in size