A sprinter runs 100 at a speed of 7 meters per second. Then she cold down by running 100 meters at 3.5 meters per second. What is the best prediction? KE=1/2mv^2
The best prediction is that the sprinter's kinetic energy will be higher during the first part of the run when she is running at a speed of 7 meters per second compared to the second part when she is running at 3.5 meters per second.
This is because kinetic energy (KE) is directly proportional to the square of velocity (v^2). So, when the sprinter is running at a higher speed of 7 meters per second, her kinetic energy will be higher compared to when she is running at 3.5 meters per second.