Question Video: Determining Which Tool is a Digital Stopwatch Physics • First Year of Secondary School

Video Transcript

Which of the measuring tools shown is a digital stopwatch? Tool (A), tool (B), or tool (C).

Tool (A) has a clock face with hands and a swinging pendulum down below, both analog features. It is a pendulum clock. Looking now at tool (B), we see that there are no digital interfaces at all nor any interfaces really. There is just some glass and some sand. This is an hourglass. Unlike the first two tools which have an analog pendulum and analog sand, tool (C) has a digital display. It is the digital stopwatch. So, out of these measuring tools shown, (C) is the digital stopwatch.