Two girls stand at the edge of a cliff.One girl throws a stone upwards with a velocity of 10.0 m/s and the other throws her stone downwards at 10.0 m/s.If they threw them from the same height at the same time,which stone will have the greatest speed when it hits the ground?

Question

Quizplus · Accepted Answer

Both stones will have the same speed when they hit the ground because the only difference in their initial conditions is the direction of their initial velocities. Gravity will affect both stones equally, giving them the same final speed upon impact, regardless of their initial launch directions.

Two Girls Stand at the Edge of a Cliff