Vernier Motion Detector

The Motion Detector uses ultrasound to measure distance. Ultrasonic pulses are emitted by the Motion Detector, reflected from a target and then detected by the device. The time it takes for the reflected pulses to return is used to calculate position, velocity and acceleration. This allows you to study the motion of objects such as a person walking, a ball in free fall or a cart on a ramp.

Our Motion Detector can measure objects as close as 15 cm to the detector and as far away as 6 m. The short minimum target distance allows objects to get closer to the detector, which reduces stray reflections. A special Track mode switch tailors the sensitivity for dynamics carts on tracks for lower noise and higher quality data. The Motion Detector attaches easily to the Vernier Dynamics System and has a pivoting head and rubber feet for ease of use when not attached to a dynamics track. The cable is removable, so you can use the Motion Detector with other interfaces with an alternate cable.

Please note: This item requires an interface such as a LabQuest or LabQuest Mini to operate. If you need a motion detector that can plug straight into a USB port, then see our Go!Motion motion detector.

VR105704

£

Air Resistance: Observe the constant velocity of a falling coffee filter to learn about air resistance using a Motion Detector.

Falling Objects: use a LabQuest and a Motion Detector to study the velocities of two different falling objects.

 Motion Detector Accessories

The Motion Detector Clamp attaches to the back of the Motion Detector. The clamp can be attached to a variety of objects, such as table tops and ring stands.

Motion Detector Clamp: VR106384

£