4. A car on an oval track starts from rest at point R and moves clockwise around the track. It increases its speed at a constant rate until it reaches point T and then travels at a constant speed until it returns to point R. R W In the table below, give the direction of the velocity and acceleration of the car at the indicated points. Use the direction labels in the rosette to the right of the racetrack drawing: J for no direction, K for into page, L. for out of page, or M if none of these are correct. Point on track S U V W X Velocity direction Acceleration direction If the distance from Point R to point T is 200 meters and the car takes 11.0 seconds to reach point T. (Show all your work below.) g) What speed does the car reach point T with? h) What is the car's acceleration from point R to point T? i) What amount of net force is exerted on the car from point R to point T, if the car is massed 1400 kg? j) If the car's engine provides a total amount of 5000 N and the only resistant force is the friction from the track, what is the coefficient of kinetic friction between the tires and the track?
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.
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