Question

T/F: The pin or valve port piston of the electronic step-motor expansion valve can move a linear motion of 300 steps per second

Answer 1

True, the slope of the position-time graph at a certain point gives the velocity at that point; if it's 115 m/s at 20 seconds, that's the jet car's velocity.

Step-by-step explanation:

The statement is True: By taking the slope of the curve in the graph, you can determine the velocity of an object at a specific point in time. If a graph shows the position of a jet car over time, the slope of the line at any given point would represent the velocity of the car at that moment. So, if the slope of the graph at t = 20 s is 115 m/s, that would indeed be the velocity of the jet car at that time.