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Physics

General

Easy

Question

A loaded 20,000 kg coal wagon is moving on a level track at 6m $s to the power of negative 1 end exponent$ . Suddenly 5000 kg of coal is dropped out of the wagon. The final speed of the wagon is

$6 {ms}^{- 1}$
$8 {ms}^{- 1}$
$4.8 {ms}^{- 1}$
$4.5 {ms}^{- 1}$

The correct answer is: $6 ms to the power of negative 1 end exponent$

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