A lump of modelling material collides with a stationary block on a smooth horizontal surface. The modelling material remains attached to the block after the collision.
| object | mass in kg\mathrm{kg}kg | speed before collision in m/s\mathrm{m/s}m/s | speed after collision in m/s\mathrm{m/s}m/s |
|---|---|---|---|
| modelling material | 0.20 | 6.0 | 2.4 |
| block | 0.30 | 0.0 | 2.4 |
During the collision, 0.16 J of energy is carried away by sound waves. After the collision, no energy remains in an elastic store.
Calculate the decrease in the total kinetic energy of the modelling material and the block during the collision.
Calculate how much of the decrease in kinetic energy is not carried away by sound waves.
Explain how the energy calculated in (b) is transferred during the collision.
121 exam-style questions on Edexcel GCSE Physics 3.1 Energy stores and calculations, covering 3.1.1 Gravitational potential energy, 3.1.2 Kinetic energy, and 3.1.3 Energy transfers and conservation of energy. Each one has a worked solution and a mark scheme showing where the marks go.