Cars A and B approached each other on a straight road from points 450 m apart. Car A has an initial velocity of 70 kph and decelerates at the rate of 0.4 m/s". Car B has an initial velocity of 20 kph and accelerates at the rate of 0.3 m/s. After how many seconds will the two cars meet?
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.
1. Cars A and B approached each other on a straight road from points 450 m apart. Car A has an initial velocity of 70 kph and decelerates at the rate of 0.4 m/s". Car B has an initial velocity of 20 kph and accelerates at the rate of 0.3 m/s. After how many seconds will the two cars meet?
2. An elevator starting from rest at the first floor of a tall building accelerates uniformly at 0.5 m/s? for 4 seconds, then move at a constant speed for 10 seconds, then decelerate uniformly for 6 seconds until it stopped. If the floors are 3 m apart, at what floor did it stop?
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