Which of the following has the most kinetic energy ? a car traveling at 20 km/h a tractor traveling at 20 km/h bicycle traveling at 20 km/h motorcycle traveling at 20 km/h

they all have the same velocity ... so the one with the most mass

probably the tractor

WHICH TRACTOR

The kinetic energy of an object depends on its mass and its velocity. Since all the objects mentioned (car, tractor, bicycle, and motorcycle) are traveling at the same velocity of 20 km/h, the object with the most kinetic energy would be the one with the highest mass. In this case, a car would typically have the highest mass among these options. Therefore, the car traveling at 20 km/h would have the most kinetic energy.

To determine which object has the most kinetic energy, we need to consider a formula: Kinetic Energy (KE) = (1/2) * mass * velocity^2.

Since the masses of the objects are not given, we can assume they are roughly similar for this comparison. Therefore, the object with the highest kinetic energy will be the one with the highest velocity.

In this case, all the objects are traveling at the same velocity of 20 km/h, so they will have the same kinetic energy, assuming all have similar masses.