Two boats start together and race across a 60-km-wide lake andback. Boat A goes across at 60 km/h and returns at 60 km/h.Boat B goes across at 30 km/h, and its crew, realizing how farbehind it is getting, returns at 90 km/h. Turnaround times arenegligible, and the boat that completes the round trip firstwins. (a) Which boat wins and by how much? (Or is it a tie?)(b) What is the average velocityof the winning boat?
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.
Two boats start together and race across a 60-km-wide lake and
back. Boat A goes across at 60 km/h and returns at 60 km/h.
Boat B goes across at 30 km/h, and its crew, realizing how far
behind it is getting, returns at 90 km/h. Turnaround times are
negligible, and the boat that completes the round trip first
wins. (a) Which boat wins and by how much? (Or is it a tie?)
(b) What is the average velocity
of the winning boat?
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