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8 Energy – forces doing work

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Question 25

A launch system exerts a constant force of 12 kN12\ \mathrm{kN}12 kN on a roller-coaster train for 30 m in the direction of travel. The train's kinetic energy store increases by 300 kJ. The work done changes only the kinetic and thermal energy stores.

How much energy is transferred to thermal stores during the launch?

[1]
A

360 kJ360\ \mathrm{kJ}360 kJ

B

660 kJ660\ \mathrm{kJ}660 kJ

C

60 kJ60\ \mathrm{kJ}60 kJ

D

300 kJ300\ \mathrm{kJ}300 kJ

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8 Energy – forces doing work Questions

  1. GCSE
  2. /Physics
  3. /8 Energy – forces doing work

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