The table shows measurements for a trolley released from rest at the top of a ramp. The same trolley is used for each run. Use g=10 N/kgg=10\ \mathrm{N/kg}g=10 N/kg.
| Run | Vertical drop in m\mathrm{m}m | Speed at bottom in m/s\mathrm{m/s}m/s |
|---|---|---|
| P | 0.80 | 3.0 |
| Q | 1.25 | 4.0 |
| R | 1.80 | 5.0 |
| S | 2.45 | 6.0 |
In which run is the smallest fraction of the lost gravitational potential energy transferred to the surroundings?
Run P
Run Q
Run R
Run S