From the edge of a roof top you toss a green ball upwards with initial speed v₀ and a blue ball downwards with the same initial speed.Neglect air.When they reach the ground below A)the green ball will be moving faster than the blue ball. B)the blue ball will be moving faster than the green ball. C)the two balls will have the same speed.

Question

Quizplus · Accepted Answer

The green ball and blue ball have the same initial speed. Neglecting air resistance means that there is no external force acting on the balls once they are released, except for the force of gravity. Because the balls have the same initial velocity, they will experience the same acceleration due to gravity. Therefore, they will both reach the ground with the same speed. It doesn't matter whether one is moving upwards and the other downwards - they are still affected by the same gravitational force.

From the Edge of a Roof Top You Toss a Green