The kinetic energy of an object can be calculated using the formula KE = 1/2mv^2, where KE is the kinetic energy, m is the mass, and v is the velocity of the object.
In this scenario, we are only given information about the velocity (v) of the sprinter. We are not given any information about the mass (m) of the sprinter. Therefore, we cannot make any conclusions about how her kinetic energy changes with the given information.
So the best prediction is: Her kinetic energy stays the same.
A sprinter runs 100 meters at a speed of 7 meters per second. Then she cools down by running 100 meters at 3.5 meters per second. What is the best prediction? KE=12mv2 (1 point) Responses Her kinetic energy stays the same. Her kinetic energy stays the same. Her kinetic energy doubles when she cools down. Her kinetic energy doubles when she cools down. Her kinetic energy decreases by a factor of 4 when she cools down. Her kinetic energy decreases by a factor of 4 when she cools down. Her kinetic energy decreases by a factor of 2 when she cools down.
1 answer
1 answer