PH-2501

Kinetic energy

Physics · Secondary 4 · Medium · Kinetic energy

A car of mass

1200\,\text{kg}

is travelling at

20\,\text{m s}^{-1}

. What is its kinetic energy? Use

E_k = \tfrac12 mv^2

.

$2.4\times10^5\,\text{J}$
$4.8\times10^4\,\text{J}$
$1.2\times10^5\,\text{J}$
$2.4\times10^6\,\text{J}$

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