A theatre technician moves a scenery panel along a horizontal track. Moving the panel transfers 72 J of energy.
The technician measures the steady force on three occasions.
| Measurement | Force in N\mathrm{N}N |
|---|---|
| 1 | 39 |
| 2 | 41 |
| 3 | 40 |
The mean of the force readings is used.
Calculate the distance moved by the panel.
56 cm56\ \mathrm{cm}56 cm
180 cm180\ \mathrm{cm}180 cm
176 cm176\ \mathrm{cm}176 cm
185 cm185\ \mathrm{cm}185 cm