This discussion centers on the physics of two objects thrown from a cliff, one with a positive initial velocity (upward) and the other with a negative initial velocity (downward). The object thrown upward reaches a greater height before descending, but its final velocity (vf) upon hitting the ground is not necessarily larger than that of the downward-thrown object. Participants emphasize the importance of calculating the initial velocities and understanding the effects of gravity on both objects to accurately determine their final velocities upon impact.
PREREQUISITESStudents of physics, educators teaching kinematics, and anyone interested in understanding the dynamics of projectile motion and gravitational effects.
Yes. perhaps your argument is correct but check their initial velocities (from which they start falling under gravity) and then calculate Vf... then you may be wrong!Gerstemeier said:thus have a larger vf upon hitting the ground since it falls farther and therefore is subject to gravity longer?
If you throw an object upward from the top of the cliff, it will normally come back down again. When it does so and is level with the top of the cliff, what is its velocity then?Gerstemeier said:Two objects thrown from a cliff. One with + vinitial (upward) One with - vinitial (downward). Does the one with + vinitial not reach a greater height and thus have a larger vf upon hitting the ground since it falls farther and therefore is subject to gravity longer?