daniel20152015 said:Would it be zero because the displacement is zero or would I calculate the 57 total meters ran divided by the overall time?
The speed of an object can be calculated by dividing the distance it travels by the time it takes. In this case, the speed of the guy running would be 28.5 meters divided by 11.5 seconds, which equals 2.48 meters per second.
Yes, to convert meters per second to miles per hour, you can use the conversion factor of 2.237. Therefore, the speed of the guy running would be approximately 5.56 miles per hour.
Acceleration is the rate of change of an object's velocity. To calculate it, you would need the initial velocity, final velocity, and the time it took to change from the initial to the final velocity. As we only have the distance and time, we can calculate the average acceleration using the formula: acceleration = (final velocity - initial velocity) / time. In this case, the initial velocity can be assumed to be 0, so the acceleration would be 2.48 m/s divided by 11.5 seconds, which equals 0.215 m/s².
Work is defined as the force applied to an object multiplied by the distance it moves in the direction of the force. In this case, we would need to know the force the guy exerted while running. As we do not have this information, we cannot calculate the amount of work done.
Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula: KE = 1/2 * mass * velocity². As we do not have the mass of the guy, we cannot determine his kinetic energy after running.