A constant retarding force of 50 N is applied to a body of mass 20 kg moving intially with a speed of `15ms^(-1)` How long does the body take to stop ?

Explanation

To solve the problem step by step, let's break it down:

### Step 1: Identify the given values
- Mass of the body (m) = 20 kg
- Initial velocity (u) = 15 m/s
- Retarding force (F) = 50 N

### Step 2: Calculate the deceleration (a)
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