GPE & KE Flashcards

All 3 cards in this deck

State the equation for change in gravitational potential energy.

$\Delta GPE = m \times g \times \Delta h$ (mass in kg, gravitational field strength in N/kg, change in vertical height in m)

State the equation for kinetic energy.

$KE = \tfrac{1}{2} \times m \times v^2$ (mass in kg, speed in m/s)

True or false? Doubling the speed of a car doubles its kinetic energy.

False. KE depends on $v^2$, so doubling the speed gives four times the kinetic energy.