19. Two identical spaceships are traveling in deep space, far from any planets or stars. The ships travel in the same direction, with the slower one directly behind the faster one. The graph above shows the speed of the two ships during a 10 s interval. Does at least one of the ships have its engine turned on during the time interval shown, and what evidence indicates so? Velocity (m/s) 8010 8005 8000- 7995 7990 O 0 O 2 4 6 Time (s) ● 8 Ship 1 Ship 2 10 A. Yes. Because ship 2 is speeding up. B. Yes. Because the total momentum of the two ships has increased C. No. Because the total momentum of the two ships has decreased D. No. Because ship 1 is slowing down while ship 2 is speeding up

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Displacement, Velocity and Acceleration

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.