Currently the sim is saving the final data point on each Trajectory with a velocity and acceleration of zero. This does not correctly represent the motion on the parabolic path, where the final velocity and acceleration should be the moment of impact. This could present issues if the DataProbe were ever to display velocity or acceleration
Note: Students often try to say (incorrectly) that the final velocity of a projectile is zero because it hits the ground, so this issue would feed into that confusion if left unchanged.
Currently the sim is saving the final data point on each Trajectory with a velocity and acceleration of zero. This does not correctly represent the motion on the parabolic path, where the final velocity and acceleration should be the moment of impact. This could present issues if the DataProbe were ever to display velocity or acceleration
https://github.com/phetsims/projectile-motion/blob/57e46509115aad2266290118c8da2a9608281133/js/common/model/Trajectory.js#L347-L349
Note: Students often try to say (incorrectly) that the final velocity of a projectile is zero because it hits the ground, so this issue would feed into that confusion if left unchanged.