A research team investigates the motion of a specialized sensor capsule of constant mass being towed horizontally across a low-friction testing channel.
The towing force is transmitted to the capsule via a taut nylon cord. State the name of this force.
For a constant towing force of 12.5 N12.5\text{ N}12.5 N, the team conducts three test runs and records the following values for the capsule's acceleration:
3.45 m/s2,3.58 m/s2,3.42 m/s2 3.45\text{ m/s}^2, \quad 3.58\text{ m/s}^2, \quad 3.42\text{ m/s}^2 3.45 m/s2,3.58 m/s2,3.42 m/s2Calculate the uncertainty in these acceleration measurements.