Question

$\sqrt{(v {2 \div r}^{2} } ) {2 }^{2} + (dv \div dt) {2}^{2}$
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Answer 1

Explanation:

{√(v^2)/√r^2)}2^2+2^2(dv/dt)

4(v/r)+4(v/t)

4v(r+t)/rt