Two blocks of masses `5 kg and 2 kg` are placed on a frictionless surface and connected by a spring. An external kick gives a velocity of `14 m//s` to the heavier block in the direction of lighter one. The magnitudes of velocities of two blocks in the centre of mass frame after the kick are respectively :

Explanation

To solve the problem step by step, we will follow these steps:

### Step 1: Identify the masses and initial conditions
- Let the mass of the first block (m1) be 5 kg and the mass of the second block (m2) be 2 kg.
- Initially, both blocks are at rest, so their initial velocities (u1 and u2) are both 0 m/s.

### Step 2: Determine the final velocity of the first block after the kick
- The first block (5 kg) receives an external kick, giving it a velocity (v1) of 14 m/s towards the second block.
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