Now, we will learn about Velocity Time Graphs . Velocity-Time Graphs: To draw velocity time graphs, we will use the three equations of motion. Case 1: Velocity-time graphs with constant velocity (zero acceleration) When the velocity is constant, the velocity time graph, with Y-axis denoting velocity and X-axis denoting time, will be like: As clear from the graph, the velocity is constant (c) throughout the time interval.
Nikola Tesla first invented the radar because he knew the America needed help in World War I since German U boats sank hundreds of our boats. Sure it could only detect roughly 6feet out, but it was a start.
The threat of bombing revived interest in a technology that had been invented several decades earlier but not developedâradar. Radar works by sending out radio waves and detecting any reflections from distant objects.roximity fuzes, like the modern one shown here, are attached to shells. A tiny radar set within the proximity fuze triggers detonation of the shell when it is close to the target. Proximity fuzes were developed during World War II, but remain in use today.