Numerical problems Calculate
How fast sbould a man of 70 kg run so that his kinetic energy is 1715 J?

Explanation

To solve the problem of how fast a man of 70 kg should run to have a kinetic energy of 1715 J, we can use the formula for kinetic energy:

### Step 1: Write the formula for kinetic energy
The formula for kinetic energy (KE) is given by:
\[ KE = \frac{1}{2} mv^2 \]
where:
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