Asked by mary1111
A runner training for a race times 400 meter laps. Lap 1 60sec, Lap 2 57sec, Lap 3 55sec, Lap 4 53sec. What is the average velocity in meters per second?
a. 0.563
b. 7.1
c. 14.2
d. 56.25
please help me, I using the average velocity formula but still i get it wrong
a. 0.563
b. 7.1
c. 14.2
d. 56.25
please help me, I using the average velocity formula but still i get it wrong
Answers
Answered by
drwls
You do NOT average the velocities of each lap, although that will be close to the right answer.
The correct answer is
1600 meters (the total distance) divided by total time, in seconds (60 + 57 + 55 + 53 = 225 s).
1600/225 = ___ m/s
The correct answer is
1600 meters (the total distance) divided by total time, in seconds (60 + 57 + 55 + 53 = 225 s).
1600/225 = ___ m/s
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