Time and Pendulums

According to the video, how did accurate time keeping help sailors?

• They could use it to find out their longitude.

• They needed to know when bed time was.

• They needed to know when high tide was.

• They could use it to tell how fast they were sailing.

Which force is primarily responsible for clocks working?

• magnetism

• gravity

• cohesion

• air resistance

The pendulum will continue to move back and forth forever without anyone having to do anything.

• True

• False