A moving test carriage collides with a fixed spring-loaded buffer. The carriage comes to rest and the spring is held compressed.

The table lists every energy transfer and store change during the collision except the decrease in the carriage's kinetic store. There are no net changes in any other energy stores.

Energy change or transfer	Energy in $J\mathrm{J}$
Increase in the spring's elastic store	$50016\,500$
Increase in thermal stores of the carriage, buffer and surroundings	3450
Energy carried away by sound waves	50

How much does the energy in the carriage's kinetic store decrease?

$J19\,950\ \mathrm{J}$

$J16\,500\ \mathrm{J}$

$J16\,550\ \mathrm{J}$

$J20\,000\ \mathrm{J}$

A moving test carriage collides with a fixed spring-loaded buffer. The carriage comes to rest and the spring is held compressed.

The table lists every energy transfer and store change during the collision except the decrease in the carriage's kinetic store. There are no net changes in any other energy stores.

Energy change or transfer	Energy in $J\mathrm{J}$
Increase in the spring's elastic store	$50016\,500$
Increase in thermal stores of the carriage, buffer and surroundings	3450
Energy carried away by sound waves	50

How much does the energy in the carriage's kinetic store decrease?

$J19\,950\ \mathrm{J}$

$J16\,500\ \mathrm{J}$

$J16\,550\ \mathrm{J}$

$J20\,000\ \mathrm{J}$

3 Conservation of energy

Question 30

Markscheme

3 Conservation of energy

Question 30

Markscheme

3 Conservation of energy

Question 30

3 Conservation of energy Questions

3 Conservation of energy

Question 30

3 Conservation of energy Questions