Two balls of different masses (one lighter and other heaver) are thrown vertically upwards with the same speed. Which one will pass through the point of projection in the downward direction with greater speed?

Explanation

To solve the problem of which ball will pass through the point of projection in the downward direction with greater speed, we can use the principles of kinematics and the work-energy theorem. Here’s a step-by-step solution:

### Step 1: Understand the scenario
We have two balls of different masses (one lighter and the other heavier) thrown vertically upwards with the same initial speed (let's denote this speed as \( u \)).

### Step 2: Analyze the motion
When the balls are thrown upwards, they will rise to a certain height before coming to a stop momentarily and then falling back down.

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